Directions: Read the sentence to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. Choose the corresponding letter of that part as your answer. If the sentence is correct as it is, select 'No error'. (Ignore errors of punctuation, if any).

Several developing nations rely on (A)/ solar power for their energy needs (B)/ despite of many other renewable sources (C)/ being available in the region. (D)

The correct option is C.

Explanation:
The error lies in part (C) of the sentence. The phrase "despite of" is grammatically incorrect.
The preposition "despite" means "in spite of" and is used without "of". Therefore, using "of" immediately after "despite" creates a redundant and grammatically incorrect usage.

Corrected Sentence:
"Several developing nations rely on solar power for their energy needs despite many other renewable sources being available in the region."
OR
"Several developing nations rely on solar power for their energy needs in spite of many other renewable sources being available in the region."