Statement: “He continues to be as busy as he was while heading the premier investigating agency.” Assumptions: I. Nowadays he is busy writing books. II. The reference is to an ex-chief of the country’s premier investigating agency (e.g., CBI).

Introduction / Context:
The sentence compares current busyness to the period when the person headed the premier investigating agency. We test the assumptions.

Given Data:
Role described in the past tense; present activity unspecified.

Concept / Approach:
“As he was while heading” implies he no longer heads it; hence he is the ex-chief. No particular present activity is specified.

Step-by-Step Solution:
I: “Busy writing books” is an invented detail. Not implicit.II: Identifying him as the former chief follows from the contrast between “continues to be” and “while heading”. Implicit.

Verification / Alternative check:
Any ex-role (commissioner, director) fits; in India, “premier investigating agency” commonly refers to CBI.

Why Other Options Are Wrong:
Options including I add specifics absent from the statement.

Common Pitfalls:
Inferring present tasks beyond what is stated.

Final Answer:
Only assumption II is implicit.