I accidentally said "Thanks" for this one?

Unbelievable.

Well, might as well practice on this.

I cannot draw the Venn diagrams here, because I don't know how to draw by computer.

There's the rectangular box with the 3 rings or circles inside the box. You should know them, if you studied Venn diagrams.

The central space, the space where all 3 languages have a common space, there will be 3 students there.

The space common to Latin and French, there will be 2 students.

The space common to Latin and Spanish, there will be 1 student.

Only Latin, 5 students.

Only Spanish, 8 students.

Common to Spanish and French, 4 students.

Therefore, only French, 7 students --------------answer.