How many distinct prime factors does 720 have?

✓ Correct Answer: Option B

To find distinct prime factors, perform prime factorization of 720. 720 = 72 * 10 = (8 * 9) * (2 * 5) = (2^3 * 3^2) * (2 * 5) = 2^4 * 3^2 * 5^1. The distinct prime factors are 2, 3, and 5, so there are 3 distinct prime factors.