Select the most appropriate option to fill in blank no. 5.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3, i.e., have.
Concept: Subject-Verb Agreement and Tense
Explanation:
The subject "Indian agriculture and allied activities" is plural, so the verb must agree in number. Present perfect tense requires "have" + past participle. Here, "have witnessed" is correct.
Correction:
"Indian agriculture and allied activities have witnessed a green revolution..."
Final sentence:
"Indian agriculture and allied activities have witnessed a green revolution, a white revolution, a yellow revolution and a blue revolution."