Which of the following sentences is correct?

A The rich is not always happy.

B The rich did not happy always.

C The rich are not always happy.

D The riches is not always happy.

Correct Answer: Option C

সঠিক উত্তর হলো- The rich are not always happy.
এই বাক্যে subject 'The rich' হচ্ছে plural number তাই verb হিসেবে 'are' বসবে।