Geometry

Answer: A

Explanation:

Let's analyze each option by forming its inverse:

A) Inverse: If a number is not divisible by 9, then the sum of its digits is not divisible by 9. (✅ True — By the divisibility rule for 9, if the sum of a number's digits is divisible by 9, the number itself is divisible by 9. Therefore, if a number is not divisible by 9, the sum of its digits cannot be divisible by 9.)

B) Inverse: If a shape is not a circle, then it is not a closed curve. (❌ False — Many...