The restaurant is . . . . . . . . the sea front.

A. on

B. of

C. about

D. in

Answer: Option A

Solution(By Examveda Team)

'On' and 'in' are prepositions in relation to place and time.
'On' is used to show that something is in a position above something else and touching it.
'In' is used when something is within, i.e. one thing contains another.
'On' is the appropriate preposition to use here.