Which sentence has correct subject-verb agreement?

The viola are similar in its shape to the violin.
The cello have a deeper sound than the violin.
The violin make the most beautiful sound.
Violins are smaller instruments than violas.

Question

Which sentence has correct subject-verb agreement?

    The viola are similar in its shape to the violin.
    The cello have a deeper sound than the violin.
    The violin make the most beautiful sound.
    Violins are smaller instruments than violas.

anonymous · Answer

The correct usage would be D. The reasoning behind this is that it uses the proper usage of 'are' while the others are very tricky, but incorrect. With A, it would be "is" instead of "are", with B it would be "has" instead of "have" and with C, it would be "makes" instead of make.