Will my mother have baked cake?

A. Will the cake have baked by my mother?
B. Will the cake has being baked by my mother?
C. Will the cake be baked by my mother?
D. Will the cake have been baked by my mother?

Explanation

The future perfect passive is will have been plus the past participle: “Will the cake have been baked...?” Option c is only simple future passive and loses the perfect meaning.

Will my mother have baked cake?

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