Topic: Sequence of Tense,

Best Answer Explained in Below-:

The correct choice for the sentence "He left the house.... the rain stopped" is D) "as soon as." This option conveys a clear causal relationship between the two actions—leaving the house and the rain stopping—implying that one event occurred immediately after the other.

Using "as soon as" indicates that there is a chronological sequence in which the rain stopped right at the moment he left, highlighting both actions' timing. This phrasing captures the immediacy and connection between the two events, suggesting that he may have timed his departure to coincide with the rain stopping.

In contrast, the other options do not convey this same immediacy or clarity. "Before" implies he left prior to the rain stopping, which doesn’t express the intended overlap of events. "While" suggests both actions happened simultaneously, which does not accurately depict the sequence. "As so since" is grammatically incorrect in this context and doesn't provide a logical connection.

Thus, "as soon as" is the most effective choice, accurately reflecting the timing and relationship of the actions in the sentence.