The first one. overlapping!! hope this was helpful!!
Answer is: <span>D.) p.
</span>p<span> or </span>piano<span> meaning "soft".
</span>mp -<span> standing for </span>mezzo-piano<span>, meaning "half soft".
</span>mf -<span>standing for </span>mezzo-forte<span>, meaning "half loud".
</span><span>ff - standing for fortissimo and meaning "very loud".
</span>Piano<span> affects the dynamics (or volume) of a musical composition and is an indication to play louder than </span>pianissimo (pp<span>), but softer than </span>mezzo piano<span>.</span>
The Mound Builders used metal tools, and were probably metal builders. Based on that information I would say the answer is B.Copper, because copper is a metal.
