Question

What can you infer from the sentence?

Answer 1

Answer:

What you can infer from the sentence is that something kept the roommate out late.

Explanation:

Using just the provided sentence as reference we can infer that the roommate was not at home since in the original sentence it says "got home", the original sentences does not give any further information about the roommate that could generate more inferences, we do not know if the roommate is new to the area, if they enjoy reading or if they sleep well at night.

Answer 2

Something kept the roommate out late.

Something kept the roommate out until 4 a.m.