From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences: The Principal has a...

Answer Details

The correct option is "heads of department". The sentence is in the plural form, so it requires the plural form of "head of department". The option "heads of departments" is incorrect because "department" is already plural, so it is redundant to add an "s" at the end. Similarly, "head of departments" is also incorrect because "head" should be in the singular form to agree with "of departments".