Question

which of these explains what a hypothesis is?
the measurements you collect and data you analyze
an educated guess on how things works
a conversation over why an experiment went wrong
an observation about something that happens in nature

Explanation:

A hypothesis is a proposed, testable explanation for a phenomenon, based on prior knowledge and observation, which fits the definition of an educated guess about how things work. The other options describe data/measurements, post-experiment discussion, and observations, not a hypothesis.

Answer:

an educated guess on how things works