Question

any biotic or abiotic factor that restricts the existence, numbers, reproduction, or distribution of organisms is called a(n)... a. limiting factor b. tolerance c. factor of distribution d. restriction factor

Explanation:

In biology, a limiting factor is defined as any biotic or abiotic factor that restricts the existence, numbers, reproduction, or distribution of organisms. Tolerance refers to an organism's ability to withstand certain conditions, factor of distribution is not a standard term for this concept, and restriction factor is not the correct scientific term for this.

Answer:

A. Limiting factor