The correct passive form of the given sentence is:

☀ The food has not been tasted by me.

Let's break down the options:

1. The food have not been tasted by me. (Incorrect) This sentence is grammatically incorrect because the subject "food" is singular, but the verb "have" is plural ("have" is used with plural subjects). The correct form should be "The food has not been tasted by me."

2. The food has not tasted by me. (Incorrect) This option is in the passive voice, but the verb "tasted" should be in its past participle form, which is "been tasted" for the passive construction. The correct form should be "The food has not been tasted by me."

3. The food has not been tasted by me. (Correct) This sentence correctly uses the passive voice and conveys the same meaning as the original sentence.

4. The food have not tasted by me. (Incorrect) This option is in the active voice, not the passive voice. It is not a proper passive form of the original sentence. The correct passive form should use "has not been tasted" as shown in option 3.