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The danger of overheating of the machine parts ……………through oiling.
a. reduced
b. is reduced
c. reducing
d. are reduced

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davidbeck: Among options "a" and "b" which one would be correct?

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The danger of overheating of the machine parts are reduced through oiling.

Hùng Nguyễn MạnhThe danger of overheating of the machine parts are reduced through oiling

No. These are not in concord:

Hùng Nguyễn MạnhThe danger...are (X)
davidbeck

The danger of overheating of the machine parts ……………through oiling.
a. reduced
b. is reduced
c. reducing
d. are reduced

b

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