A. Food packets are distributed to the flood victims by the authorities.
B. Food packets is being distributed to the flood victims by the authorities.
C. Food packets were being distributed to the flood victims by the authorities.
D. Food packets are being distributed to the flood victims by the authorities.
Given sentence is in present continuous tense and it is in active voice.
Rule :
Subject + (is/am/are) + being + V3 + Other agents