Answer B. (Future perfect tense is used, as the sentence refers to something that will be completed by some point in the future.) is correct.
B is correct because the event which will happen in the future (the baking of the cakes) will also have ended.
I will have baked is a correct form of future perfect, because future perfect is made with the following construction:
Subject + will have + past participle
summary because it is the result of him leaving the hard work
Answer:
the adjectives are nervous and final so go with B.
B. A metaphor
The reason I choose B is because a simile has to have the words as, a, etc.
