Question

A reference frame attached to the earth 

(A) Is an inertial frame by definition 

(B) Cannot be an inertial frame because the earth is revolving round the sun 

(C) Is an inertial frame because Newton’s laws are applicable in this frame 

(D) Cannot be an inertial frame because the earth is rotating about its own axis

Answer 1

Correct options are (B) and (D)

A rotating/revolving frame is accelerating and hence non-inertial.

Answer 2

Answer is

(B) Cannot be an inertial frame because the earth is revolving round the sun 

(D) Cannot be an inertial frame because the earth is rotating about its own axis