At a get-together at Modotti's home, Kahlo saw Diego Rivera again. Later, he did not remember the shy young girl quietly watching the crowd of celebrities. But Kahlo was fascinated by the impetuous Rivera. In many ways they were alike. Both were outrageous pranksters and born masters of exaggeration. . . . "I began to be very interested in him, in spite of the fear I had of him," she later recalled. That interest would turn into the love of her life. Which detail from this excerpt best supports the opinion that Diego Rivera was a fun and spontaneous person? Kahlo saw Rivera at Modotti's home. Kahlo and Rivera both liked playing pranks. Kahlo and Rivera were much alike. Kahlo was shy at their first meeting.

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.

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.

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.