• 'In the pipeline' is an idiom which means being planned or being developed.
  • E.g. :- Twenty-eight lawsuits were filed this week, and another 200 cases are in the pipeline.

• Moreover, we need a preposition here that show having the purpose of. And that will be ‘for’.
  • E.g. :- I need some money for tonight.

• Thus, ‘in the pipeline for’ is the most suitable one.

The correct sentence would be :- The theatre company has several new productions in the pipeline for next season.

Hence, option A is the correct answer.

• A man of words is someone who keeps promises, who can be trusted.

• A man of straw is someone who does not have the ability or the courage necessary to carry out a particular task or to fulfil a particular role.

• There are no such phrases as – man of grass, man of music & man of mars.

• A comedian cannot do much during a war. Thus, we can use the phrase “man of straw” in the underlined part.

The correct sentence will be: During the war, the comedian proved to be a man of straw.

Hence, option C is the correct answer.

• There is no sense of comparison in the sentence. Thus, the use of the comparative degree “better” is not correct here.

• The only logical degree that will go in the sentence is the superlative degree, i.e. the best. The person is asking the shopkeeper to show the best dress among all.

The correct sentence will be: Show me the best dress in the shop.

Hence, option C is the correct answer.

The underlined part is grammatically incorrect.

• The given sentence is in past perfect tense.

• Before adjective ‘wise’, we need an indefinite article ‘a’ not an. As, article ‘a’ is used before the words that have consonant sound.

• Thus, option b and d will be eliminated.

• After preposition ‘to’, we need base form of the verb i.e., infinitive will be used here.

• So, option a and b are also incorrect. Thus, eliminating them too.

• Therefore, ‘had a wise maxim to help’ is the most suitable one.

The correct sentence is :- My grandmother had a wise maxim to help me get through all of my teenage crises.

Hence, option C is the correct answer.

The given underlined part is grammatically and contextually correct.

Hence, option D is the correct answer.

The underlined part is grammatically incorrect. 

Let's first see the phrasal verbs:

Set back = Delay or obstruct; Remove from or allow distance; Cost money, as

Set apart = Distinguish, be better than or different from others

Set in = Change season noticeably; to begin

Set out = Display, show; Start a journey; Arrange, organise; to give the details of something or to explain it, especially in writing, in a clear, organized way

• In the context of the sentence, the phrasal verb "set out" fits in perfectly. The sentence mentions the failure of the opposition parties to give an alternative strategy. 
  
  
• Also, the word after the underlined part is "alternative". It begins with a vowel sound. Thus, "an" should be used before it. 

 The underlined part is grammatically incorrect. 

• In the underlined part, we need an infinitive structure (to + V1). 
  
  
• Infinitives are formed from verbs, but they act as nouns, adjectives, or adverbs.
  
  
• Sometimes the to-infinitive gives a reason for the adjective;
  
  We were happy to come to the end of our journey.
  
  
• Thus, use "to pass" in the underlined part. 

 The underlined part is grammatically correct and requires no improvement. 

Hence, option A is the correct answer. 

* The given sentence talks about the importance of family.

* Adjectives such as “passive”, “futile” and “docile” do not fit well here as they all give a negative sense.

* The correct phrase is “play a role in something”. The preposition “in” should be used with “role” followed by a V+ing.

* Thus, “significant role in enduring the trends” is the correct Answer-here.

The correct sentence will be: One’s family plays a very significant role in enduring the trends and age-old traditions.

Hence, option C is the correct Answer-

* The underlined part needs an adjective in the comparative form as here we are comparing one’s dreams with someone else’s dreams.

* Also, the use of “than” shows that we need a comparative degree here.

* Thus, replace “big” with “bigger” to make the sentence grammatically sound.

The correct sentence will be: He dreams bigger than his friends.

Hence, option A is the correct Answer-