While race is more associated with biological traits, like your skin color, facial features, hair, etc., ethnicity is more about cultural identities and background. For example, you can be of Hispanic ethnicity and be of Caucasian race.
I would have to guess it is B
<span>Taking the age of the earth to be about 4 * 10^9 years and assuming the radius of its orbit has not changed and is circular, calculate the approximate total distance the earth has traveled since its birth (in a frame of reference stationary with respect to the sun)</span>
