Explanation:

Chromosomes are most condensed and perfectly aligned at the equatorial plate during Metaphase (Option C), making them optimally visible for microscopic observation. During Interphase (Option A), chromosomes are decondensed and not visible as distinct structures. In Prophase (Option B), chromosomes begin to condense but are not yet fully aligned. In Telophase (Option D), chromosomes decondense and new nuclear envelopes form, making them less distinct and harder to observe individually.