Answer: C. Pretty
Explanation: An adjective is used to describe a noun so "pretty" makes the most sense. For example, if the noun was "mat". A run mat, a love mat, and a quickly mat do not make any sense. Only a "pretty mat" makes sense.
<span>a </span><span>formal meeting of delegates and representatives</span>
“mental and intellectual benefits of learning to play an instrument
B. To indicate whether the library owns a particular book