Critical Reasoning — Implicit Assumptions Statement: “Read this book to get detailed and most comprehensive information on this issue.” Assumptions: I. The person seeking this information can read. II. There are other books available on this issue.

Introduction / Context:
The recommendation is to read a specific book for comprehensive information. What must be taken for granted for this advice to be meaningful?

Given Data / Assumptions:

• Advice: “Read this book.”
• Assumption I: the target can read.
• Assumption II: other books on the topic exist.

Concept / Approach:
Advice about reading presupposes literacy/ability to read. Whether other books exist is irrelevant to the validity of recommending a particular best source.

Step-by-Step Solution:

Verification / Alternative check:
Negate I: the person cannot read — the instruction fails. Negate II: there are no other books — the advice still stands; the recommended book may be the sole comprehensive source. Therefore only I is implicit.

Why Other Options Are Wrong:

• Only II, Either, Neither, Both: Misstate necessity by importing competition between sources that the statement does not require.

Common Pitfalls:
Over-interpreting “most” as an absolute comparative requiring multiple items. In everyday persuasive language, it often signals “very comprehensive,” and the advice remains sensible regardless.

Final Answer:
Only assumption I is implicit