Question

Nipa was drawing a map ​

Answer 1

A map was being drawn by Nipa

Answer 2

Active Voice refers to a sentence in which the subject is performing the action.

Passive Voice refers to a sentence in which the subject undergoes the action. In other words, it is writing the sentence in reverse order.

Example: Cara is packing my bag. (Active)

               My bag is being packed by Cara. (Passive)

NOTE: Sentences that convey habitual actions cannot be changed to passive mode.

Nipa was drawing a map. (Active)

A map was being drawn by Nipa. (Passive)