See to it that you leave home early ______ you can reach the exam center in time.*1 pointbutso

The correct answer to fill in the blank is "so." The sentence should read: "See to it that you leave home early so you can reach the exam center in time."

Explanation

In this context, "so" is used to express purpose or intention. It indicates that leaving home early will lead to the desired outcome of arriving at the exam center on time. The word "but" would imply a contradiction or an exception, which does not fit the intended meaning of ensuring timely arrival. Therefore, choosing "so" creates a clear causal relationship between the action of leaving early and the goal of being on time for the exam.