The statement " Earth's outer core is liquid" is?

Question

A. an observation

B. a theory

C. an inference

D. a law

Answer 1

B. a theory

Answer 2

I would select C.  Seismologists (earthquake experts) know how the waves of an earthquake travel through solid earth and how they are interrupted by liquid when observed at many seismic stations about the globe away from the epicenter.  From the responses it may be inferred that the out core must be liquid.

Answer 3

My choice is A

Answer 4

C......The fact that the outer core does not transmit "S" or "shear" waves suggests that it is a liquid.

Answer 5

I'd say it was "B"