Question

After discovering that children who grow up on farms are less likely to suffer from asthma and allergies, researchers is trying to isolate the compounds in farm dust that lead to this protection.
Choose 1 answer:
Choose 1 answer:
(Choice A) NO CHANGE
A
NO CHANGE
(Choice B) tries
B
tries
(Choice C) has tried
C
has tried
(Choice D) are trying
D
are trying

which is the true correct answer a b c or d

Answers

GPT-4o mini
The correct answer is (Choice D) are trying.

The phrase "researchers are trying to isolate the compounds in farm dust that lead to this protection" is the most appropriate tense to convey ongoing research activity.