The river Yamuna has many non-native species like goldfish that is affecting its ecosystem.

Options

A. its ecosystem
B. The river Yamuna
C. that is affecting
D. has many non-native species

Answer

C

Explanation

According to the "Subject-Verb Agreement rule", a singular subject takes a singular verb and a plural subject takes a plural verb. In the given question, .many species. is a plural subject so it will take .are. as a plural verb. Hence, that are affecting its ecosystem will be answer.