Answer:
C. It must be testable.
Step-by-step explanation:
A hypothesis is a statement that suggests an explanation for a natural occurrence that is based on an observation. A hypothesis is only acceptable if it is verifiable or falsifiable, so this means that a hypothesis has to be testable. The scientific method that will ensue will be built based on the hypothesis. For example, the experimental design will be planned to determine whether the hypothesis holds or not.