Final answer:
The statement 'Charlie is not a student' cannot be deduced based on the given information.
Step-by-step explanation:
The statement 'Charlie is not a student' cannot be deduced based on the given information.
This is because the given information only tells us that if Charlie is a student, then he reads a lot. It does not provide any information about what happens if Charlie is not a student. It is possible for Charlie to not read a lot for reasons other than not being a student.