It was fortunate (1) / all of the inmates escaped (2) from the blazing fire. (3)/ No error. (4)

Options

A. 1 It was fortunate
B. 2 all of the inmates escaped
C. 3 from the blazing fire.
D. 4 No error

Answer

2

Explanation

Here, that all the inmates escaped is the right usage.
Use of- of (Prep.) is unnecessary