Identify the leap year among the following (Gregorian rules apply).

Introduction / Context:
Given several candidate years, we determine which are leap years using the standard Gregorian rules: divisible by 4, except centuries must be divisible by 400.

Given Data / Assumptions:

• Candidate years: 2007, 2016, 2001, 1997.
• None are century years, so the 400 exception is not needed.

Concept / Approach:
For non-century years, the test reduces to “divisible by 4”. Check each year’s remainder modulo 4.

Step-by-Step Solution:

Verification / Alternative check:

Why Other Options Are Wrong:

Common Pitfalls:

Final Answer:
2016