Answer:
b) A delicious meal was cooked by the chef.
Step-by-step explanation:
passive voice can often be identified by the use of past tense in this case the meal was cooked
passive voice is when you make the object of the action (the delicious meal) into the subject of the sentence.
another example is instead of:
the chicken crossed the road
the passive voice would be:
the road was crossed by the chicken.