The correct option is D A stranger is being talked to by my mother.
The correct answer is, ‘A stranger is being talked to by my mother’. The receiver ‘a stranger’ appears first in the sentence. It is followed by the form of the verb ‘be’ ‘is’, the helping verb ‘being’, the past participle of the main verb ‘talk’, which is ‘talked’, the preposition ‘by’ and the doer ‘my mother’.