How should you test a hypothesis?

by writing a mathematical equation

by making a single observation

by performing a controlled experiment

by answering a series of questions

An hypothesis can be defined as the explanation which is proposed based on the evidence available. Based on this hypothesis further investigation can be done. a hypothesis can be tested by performing a controlled experiment and making observations. The results of the experiment will discard or prove the hypothesis right.

Hence, the correct answer is 'by performing a controlled experiment'.

me and my friend did 2