Question

what produces evidence that helps answer important questions or leads to new questions?
a a hypothesis
b an investigation
c a theory
d an approach

Explanation:

An investigation is a process that gathers data and evidence. This evidence can help answer existing questions or inspire new ones. A hypothesis is a proposed explanation, a theory is a well - established explanation, and an approach is a general way of doing something. None of these directly produce evidence like an investigation does.

Answer:

B. an investigation