Answer:
The detail from the excerpt that best supports the opinion that Diego Rivera was a fun and spontaneous person is:
Kahlo and Rivera both liked playing pranks.
Explanation:
Let's find the correct option through elimination:
1. Kahlo saw Rivera at Modotti's home. --> Up to this point in the excerpt, we know nothing about Rivera. This is clearly not enough to determine his personality and character.
<u>2. Kahlo and Rivera both liked playing pranks. --> This is the correct option. We would assume a person who enjoys playing pranks is both fun and spontaneous. Pranksters are often outgoing people, who enjoy being the center of others' attention and who cannot stand boredom.</u>
3. Kahlo and Rivera were much alike. --> This detail alone does not mean much. It is only when the author explains they are both pranksters that we can get a glimpse of their characters.
4. Kahlo was shy at their first meeting. --> This detail describes Kahlo, but not Rivera. Therefore, it is incorrect.