The answer is B. estudiante.
The article preceding it, 'las', is the plural feminine article. 'estudiante' in the sentence is singular only, but it is gender neutral. 'son' is the third person plural conjugation of the verb 'ser'. 'inteligentes' is an adjective that would refer to plural subjects. To fix the sentence, change 'estudiante' to 'estudiantes'.
1) Patty tiene el pelo amarado.
2) Patty esta en la silla de ruedas.
3) Patty es joven.
4) La abuela tiene el pelo corto
5) La abuela usa una blusa y una falda.
7) #1 asks if you use glasses
#2 asks if you have brown hair
#3 color of your eyes
#4 how many people are in your family
#5 if you have cousins
#6 do you have a sister or brother and how are they
#7 your parents name
1. El pescado; but you can use google translate
The Germans settled in Latin America, another example would be the Portugese
