Step 1: Understanding the Concept:
This question tests the difference between adjectives and adverbs. An adverb modifies a verb, while an adjective modifies a noun.
Step 2: Detailed Explanation:
In the sentence, we need a word to describe *how* the action ('did') was performed. Therefore, we need an adverb.
- The adjective is 'quick'.
- The corresponding adverb is 'quickly'.
Let's analyze the options:
- (A) I did my work quick.: Incorrect. 'quick' is an adjective, but an adverb is needed to modify the verb 'did'.
- (B) I did my work very quick.: Incorrect. 'very' modifies the following word, but that word still needs to be an adverb ('quickly').
- (C) I did my work quickly.: Correct. The adverb 'quickly' correctly modifies the verb 'did', explaining how the work was done.
- (D) I do my working quick.: Incorrect. The structure "do my working" is unnatural, and it still uses the adjective 'quick' instead of the adverb 'quickly'.
Step 3: Final Answer:
The sentence requires an adverb to modify the verb. 'Quickly' is the correct adverb. Therefore, option (C) is the correct sentence.