I think the answer is Erika has learned an important lesson about life
>>> Jenna and Franklin = They <<<
A. Jenna and Franklin "are" going to arrive late.
B. Jenna and Franklin "have" called to say they will arrive late.
C. [It is true]
D. Jenna and Franklin "are" calling to say they will arrive late.
Answer: entry one
Explanation:
Because the others are about actual instruments and in the sentence it seemed as if he was trying to have an action towards helping the arts center
<u><em>his or her</em></u>
his or her will refer to anyone in the neighborhood