One of the parts of the given sentence may or may not have an error. Identify the one with error, if any.
He could not get into the merit list despite of all his hard work.

Correct option is C

The correct answer is (c) despite of.
The phrase “despite of” is grammatically incorrect. The correct preposition is “despite” or “in spite of”. Therefore, the sentence should read: He could not get into the merit list despite all his hard work.
• Grammatical rule involved (English):
Despite is a preposition and is directly followed by a noun or gerund. It is never used with of. The correct forms are despite + noun or in spite of + noun.
• व्याकरण नियम (Hindi):
Despite एक preposition है और इसके बाद of का प्रयोग नहीं किया जाता।
सही प्रयोग है: despite + noun या in spite of + noun।