Which of these is a natural science?

physics is science. pretty sure im confused by this question. or its just poorly phrased?

deathrae76, physics is the basis for all of the sciences. that was a poorly worded question.

Q: Is physics 'a' natural science? A: Why, physics—being not just the study of matter and energy, and the interactions between them in their various forms and states, but also of the very receptacle, space-time, in which these interactions take place—is 'The' Mother of All Natural Sciences.

I am teacher of physics and l am interested of this science

Semantics only and an insult to physics!

MuscularTrucker666, I concur,threw me off