Question

what is a hypothesis?
a scientific fact that has been proven to be true without doubt.
a proposed explanation for an observation that can be tested.
a well-tested explanation for a range of observations.
(note: some text might be partially visible or misaligned due to the image, but the main question and options are captured as above.)

Explanation:

To determine the correct definition of a hypothesis, we analyze each option:

• The first option (partially visible) likely refers to an observation needing understanding, not a hypothesis.
• The second option describes a scientific fact (proven true), not a hypothesis.
• The third option: A hypothesis is a proposed explanation for an observation that can be tested. This matches the definition.
• The fourth option (partially visible) likely refers to a theory (well - tested explanation for many observations), not a hypothesis.

Answer:

The third option (the one with text "A proposed explanation for an observation that can be tested")