The correct active form of "I was deceived by the stranger " is-

"The stranger deceived me" is the correct active form of "I was deceived by the stranger."

The original sentence is in the passive voice: "I was deceived by the stranger." In passive voice, the subject of the sentence (in this case, "I") is acted upon by the verb ("was deceived"), and the doer of the action (the stranger) is mentioned with "by the stranger."

To convert a passive voice sentence into an active voice sentence, you need to make the doer of the action the subject of the sentence. In this case, the doer of the action is "the stranger." So, "The stranger" becomes the subject in the active voice.

The past tense of "was deceived" is "deceived," so we use "deceived" in the active voice sentence. Therefore, "The stranger deceived me" is the correct active voice transformation of the original passive voice sentence.

The correct active form of "I was deceived by the stranger" is:

c) The stranger deceived me.

Explanation:

The sentence "I was deceived by the stranger" is in the passive voice, where the subject (I) receives the action of the verb (deceived) by the agent (the stranger). To convert this sentence into an active voice sentence, we need to make the stranger the subject of the sentence and have them perform the action.

So, in the active voice, the correct sentence is "The stranger deceived me." This sentence now has the stranger as the subject (the one performing the action - deceiving) and "me" as the object (the one receiving the action).

The other options are not correct for the following reasons:

a) "The stranger deceives me" is in the present tense, and it doesn't match the past tense of the original sentence.

b) "The stranger has deceived me" is in the present perfect tense and doesn't match the past tense of the original sentence.

d) "The stranger had deceived me" is in the past perfect tense, which is not needed to convert the sentence from passive voice to active voice; simple past tense, as in option c, is sufficient.