Question

what is the last, though very important, step in a scientific investigation which allows other researchers to test the hypothesis?
a making observations
b forming hypothesis
c communicating results
d asking questions

Explanation:

In scientific investigation, making observations and asking questions are early - stage steps. Forming a hypothesis is also a mid - stage step. Communicating results is the last step that allows other researchers to test the hypothesis as it shares the findings and methodology.

Answer:

C. communicating results