A few tiles on skylab (1)/ were the only equipments (2)/ that failed to perform well in outer space.(3)/ No error (4).

Options

A. 1 A few tiles on skylab
B. 2 were the only equipments
C. 3 that failed to perform well in outer space.
D. 4 No error.

Answer

2

Explanation

equipment will replace equipments because -
equipment is an Uncountable Noun and the plural form is also equipment. A single item is referred to as a piece of equipment. Look at the examples given below: We need some new kitchen equipment. The athletes keep their equipment in the locker room. Hence, were the only equipment is the right usage.