Change voice

Change voice
A: Did the mother dry the clothes in the lawn?
B: Did the mother dried the clothes in the lawn?
C: Did his mother dry the clothes in the lawn?
D: Had the mother dried the clothes in the lawn?

Passive past-simple interrogatives convert to active with “Did + subject + base verb.” “Dried” after “did” is incorrect; the base form “dry” is required. Pronouns remain consistent with the original.