Bonjour
Olivia est une femme intelligente.
EXPLANATION
Intelligent is an adjective . It agrees in number and gender with the noun it qualifies.
une femme = feminine singular
A- intelligents = masculine plural ==> FALSE
B- intelligente = feminine singular ==> CORRECT
C- intelligent = masculine singular ==> FALSE (you wrote inteligent -> one L is missing
-
hope this helps ☺☺☺
