Question

For decades researchers _______ to wrest predictions from string theory, the leading candidate

for a more fundamental understanding of the universe.

(a) tried (b) were trying (c) have tried (d) try​

Answer 1

Answer:

have tried

Explanation:

HOPE IT HELPS .....

Answer 2

Answer:

For decades researchers (c)have tried to wrest predictions from string theory,the leading candidate

for a more fundamental understanding of the universe.