Can someone tell me if it’s a. or d.

It's not A.  Climate doesn't go along with you.  It depends on
WHERE on Earth you are.  When you take a long trip, you don't
bring your weather with you from home.  You get the climate of
the place you're visiting. 
If a piece of land broke off and drifted to a different place, if would
have the climate of the new place.

It's D.  When you take a long trip, you bring your freckles and
the fillings in your teeth along with you.  You have them wherever
you go. 
If a piece of land broke off and drifted to a different place, the
rocks and fossils that are buried in it would go along with it to
the new place.

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction