Choose the correct one: A series of lectures were delivered., A series of lectures was delivered., A series of lecture was delivered., None of these
Choose the correct one: A series of lectures were delivered., A series of lectures was delivered., A series of lecture was delivered., None of these
Explanation
The phrase "A series of" is singular, so it takes the singular verb "was."
This structure emphasizes that the lectures were given as part of one unified series.