Answer :
Final answer:
The adjective that best completes the second sentence is intelligentes.
Explanation:
The adjective that best completes the second sentence is intelligentes.
In this sentence, Maude et Françoise are the subject and they are described as understanding physics problems quickly. Since the subject is plural, the adjective also needs to be plural. The correct plural form of the adjective intelligent is intelligentes.
For example, if we were talking about a single girl, we would say 'Elle est intelligente' (She is intelligent), but since we are talking about Maude et Françoise (they), we say 'Elles sont intelligentes' (They are intelligent).
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