Question

(a) Anne whose research on health effects of air pollution was well-known was invited to speak at a conference.
(b) Anne, whose research on health effects of air pollution was well-known, was invited to speak at a conference.
(c) Anne which research on health effects of air pollution was well-known was invited to speak at a conference.
(d) None of the above

Answer 1

Answer:

Anne, which everyone respects, was invited to speak at a conference on the health effects of air pollution. Correct: Anne, whom everyone respects, was invited to speak at a conference on the health effects of air pollution. When the modified noun is an object of a preposition, whom is used

Explanation:

I hope you like it please mark as brilliant

Answer 2

Answer:

Anne, which everyone respects, was invited to speak at a conference on the health effects of air pollution. Correct:Anne whome everyone respects,was invented to speak at a conference on the health effects of air pollution.When the modified noun is an object of a preposition whome is used