Pick up the one which is most nearly the same in meaning as the word highlighted.

Many species of animals have become $extinct$ during the last hundred years.

Choose the word which best expresses the meaning of the given word.

VENT

Pick up the one which is most nearly the same in meaning as the word highlighted.

The time I spent in the library was a most $rewarding$ one.

Choose the word which best expresses the meaning of the given word.

Foment

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CANTANKEROUS