Complete the following sentence with the correct option:
The sky suddenly became _____

Question

Accepted Answer

The correct completion of the sentence "The sky suddenly became _____" is "dark," which is Option 2. Here is a detailed explanation justifying why Option 2 is correct and why the other options are incorrect:

1. **Explanation for Option 2 ("dark")**:
   - The word "dark" is an adjective. In this sentence, it is used to describe the state of the sky. Adjectives are used to modify nouns, and in this case, "dark" modifies the noun "sky." The sentence structure "became + adjective" is grammatically correct and commonly used to describe a change in state or condition. Therefore, "The sky suddenly became dark" is a grammatically correct and logically coherent sentence.

2. **Explanation for why the other options are incorrect**:
   - **Option 1 ("darkly")**: "Darkly" is an adverb. Adverbs typically modify verbs, adjectives, or other adverbs, but not nouns. Since the sentence requires a word to describe the noun "sky," an adjective is needed, not an adverb. Therefore, "darkly" is not suitable in this context.
   - **Option 3 ("darkness")**: "Darkness" is a noun. The sentence structure "became + noun" can be correct in some contexts, but in this specific sentence, the intended meaning is to describe the sky's condition, which requires an adjective. Thus, "darkness" does not fit the grammatical structure needed here.
   - **Option 4 ("darken")**: "Darken" is a verb. The sentence already contains the verb "became," and it requires an adjective to complete the description of the sky. Using another verb like "darken" would disrupt the sentence structure and meaning. Therefore, "darken" is not appropriate in this context.

In conclusion, Option 2 ("dark") is the correct choice because it appropriately uses an adjective to describe the change in the sky's condition, aligning with the grammatical requirements of the sentence.