1.  Statement: This book is so prepared that even a layman can study science in the absence of a teacher. 
Assumptions:

I.   A layman wishes to study science without a teacher. 
II.  A teacher may not always be available to teach science. 
III. A layman generally finds it difficult to learn science on its own.

A. Only I and II are implicit
B. Only II and III are implicit
C. Only I and III are implicit
D. All are implicit
E. None of these

Answer: Option B

Explanation:

Clearly, the statement is made to impress the usefulness of the book. It does not mention the desire of a layman. So, I is not implicit. Also, the book is intended to guide one when a teacher is not available. So, both II and III are implicit.