I assume here that we mean the thick, characteristic hair that does not appear in women (since women also have some thin and white facial hair) - this is something that appears only at puberty and it's a physical characteristics.
This is then an example of a secondary sex characteristics - the answer is A).
<span />
Found this:
Any object moving in a circle or along a curve is changing velocity (accelerating) even if its speed is constant, because its direction is changing. ... An object moving in a circular path at constant speed is a simple example of acceleration at constant speed because its velocity is changing direction.
A.Hunyo 12,1898,sa Kawit Cavite
<span>Gutenberg's first prints are not known. His first, and best, known work was the printing of The Bible; now called The Gutenberg Bible.</span>
