Ecologist = one who studies and cares about environment

Anthropologist = one who studies humans and their customs , beliefs , and relationships

Biologist = one who studies the natural processes of living things

Hence option B is the correct answer.

The meanings of the words are:

Eccentric: (of a person or their behaviour) unconventional and slightly strange.

Egoist: a person who thinks he/she is the best.

Selfish: (of a person, action, or motive) lacking consideration for other people; concerned chiefly with one's own personal profit or pleasure.

Garrulous: excessively talkative, especially on trivial matters.

Hence, option B is the correct answer.

The meanings of the words are:

Autobiography: an account of a person's life written by that person.

Museology: the science or practice of organizing, arranging, and managing museums.

Biography: an account of someone's life written by someone else.

Bibliography: a list of the books referred to in a scholarly work, typically printed as an appendix.

Hence, option C is the correct answer.

Omnipotent: (of a deity) having unlimited power.

Omniscient: knowing everything.

Omnipresent: widely or constantly encountered; widespread.

Omnivorous: (of an animal or person) feeding on a variety of food of both plant and animal origin.

Hence, option C is the correct answer.

The meanings of the words are:

Fiction: literature in the form of prose, especially novels, that describes imaginary events and people.

Biography: an account of someone's life written by someone else.

Novel: a fictitious prose narrative of book length, typically representing character and action with some degree of realism.

Autobiography: an account of a person's life written by that person.

Hence, option D is the correct answer.

Let’s understand the meaning of the given words:

Eulogy: A formal expression of praise for someone who has died recently

Prologue: An introduction to a play

Epilogue: A short speech (often in verse) addressed directly to the audience by an actor at the end of a play

Chorus: Any utterance produced simultaneously by a group

Hence, option C is the correct answer.

Let’s understand the meaning of the given words:

Hymn: A song of praise (to God or to a saint or to a nation)

Elegy: A mournful poem; a lament for the dead

Ode: A lyric poem with complex stanza forms

Epic: A lyric poem with complex stanza forms

Hence, option A is the correct answer.

The meanings of the words are:

Glutton: an excessively greedy eater.

Taciturn: (of a person) reserved or uncommunicative in speech; saying little.

Loquacious: tending to talk a great deal; talkative.

Gullible: easily persuaded to believe something; credulous.

Hence, option C is the correct answer.

Vagabond: a person who wanders from place to place without a home or job.

Explorer: a person who explores a new or unfamiliar area.

Extrovert: an outgoing, socially confident person.

Introvert: a shy, reticent person.

Hence, option C is the correct answer.

Icon: a person or thing regarded as a representative symbol or as worthy of veneration.

Notorious: famous or well known, typically for some bad quality or deed.

Famous: known about by many people.

Renowned: known or talked about by many people; famous.

Hence, option B is the correct answer.