Final answer:
The duration of a two-year insurance policy purchased on April 1 is two years, from the date of purchase to the same date two years later.
Step-by-step explanation:
The student's question revolves around understanding the duration of an insurance policy. If a two-year insurance policy is purchased on April 1, the duration, quite simply, is two years. Therefore, if we assume that the policy was purchased on April 1 of a certain year, it would cover until March 31 two years later, considering we are using a standard Gregorian calendar without any special circumstances.