Select the most appropriate option to fill in the blank.
Researchers ___________ new technologies to improve recycling processes in the near future.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. are developing.
Context: The sentence talks about researchers working on new technologies in the present time with future impact. Hence, a present continuous tense verb is required.
Meaning of the words:
Was developing: Past continuous tense, refers to an action happening in the past, not suitable here.
Are developing: Present continuous tense, indicates ongoing work happening now, correct for the given context.
Develop: Simple present tense, indicates a habitual or general fact, not suitable because the focus is on current action.
Has been developing: Present perfect continuous tense, indicates action that started in the past and continues now, but grammatically incorrect with plural subject “Researchers.”
Correct word: Are developing
Reason: The subject “Researchers” is plural, and the sentence refers to present ongoing work, so “are developing” fits both grammatically and contextually.
Final Sentence: Researchers are developing new technologies to improve recycling processes in the near future.
Hence, the chosen option is correct.