In the following questions sentences are given with blanks to be filled in with an appropriate word(s). Four alternatives are suggested for each question. Choose the correct alternative out of the four.
______ the rain forests is very important, if we do not want the flora and fauna found there to become extinct.

Options

A. Reserving
B. Destroying
C. Preserving
D. Maintaining

Answer

C

Explanation

preserving (Verb) : saving, conserving
Here, Preserving is the right usage.