Question

what can a change in the environmental conditions cause? natural selection artificial selection mutations

Explanation:

Natural selection is a process where organisms better adapted to their environment tend to survive and reproduce. A change in environmental conditions can lead to this as organisms with traits suitable for the new environment are favored. Artificial selection is human - driven (like breeding dogs), not caused by environmental change. Mutations are random genetic changes, not directly caused by a change in environmental conditions (though environmental factors like radiation can cause mutations, but the question is about a general change in environmental conditions like a change in climate, not a mutagenic environmental factor).

Answer:

natural selection