Why can making observations be a very good way to come up with a scientific question?
A. Observations and questions are the same thing.
B. Observations make sure that your question is scientific.
C. You are likely to observe something that makes you curious.
D. You can't actually observe something without thinking of a question first.

C. You are likely to observe something that makes you curious.

Explanation:

The first step of the scientific method is to make an observation about something interesting.When someone notices something puzzling that makes that person curious.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.