Explanations:Conjunctions are words that connect words, phrases, or clauses. They are essential for creating complex sentences and conveying relationships between different parts of a sentence. Conjunctions of time, such as "while," "when," and "as," are used to indicate the timing of actions or events in relation to each other.
In the given sentence, "Sharifa looked left and right. She crossed the road," we need to determine the relationship between the two actions. The correct conjunction to use is "while," which indicates that the two actions are happening simultaneously. "While" is appropriate here because it suggests that Sharifa was looking left and right at the same time she was crossing the road.
Let's examine why the other options are incorrect:
"So" is a coordinating conjunction that indicates a result or consequence. It would be used if the second action was a result of the first action, which is not the case here. For example, "Sharifa looked left and right, so she crossed the road" would imply that she crossed the road because she looked left and right, which is not the intended meaning.
"But" is a coordinating conjunction that indicates a contrast or opposition between two actions. It would be used if the two actions were in opposition to each other, which is not the case here. For example, "Sharifa looked left and right, but she did not cross the road" would imply that the two actions are in opposition, which is not the intended meaning.
"For" is a subordinating conjunction that is used to provide a reason or explanation. It would be used if the second action was a reason for the first action, which is not the case here. For example, "Sharifa crossed the road for safety" would imply that safety was the reason for crossing the road, which is not the intended meaning.
"Because" is a subordinating conjunction that is used to provide a reason or explanation. It would be used if the second action was a reason for the first action, which is not the case here. For example, "Sharifa crossed the road because she needed to get to the other side" would imply that the need to get to the other side was the reason for crossing the road, which is not the intended meaning.
Therefore, "while" is the correct conjunction to use in this sentence because it indicates that the two actions are happening simultaneously.