Question

Participating in a 42 km full marathon (A) are considered to be (B) an achievement by (C) fitness enthusiasts. (D)​

Answer 1

The part which has an error is as follows:-

(B) are considered to be

• The correct answer should be - Participating in a 42 km full marathon is considered to be an achievement by fitness enthusiasts.
• Participating here is a singular entity, therefore the verb following it should also be singular (is), instead of plural (are).
• Singular and plural are words that show the quantity of an element or the subject of a given sentence.

Answer 2

choose the phrase with wrong