B,makes more sense especially if you asked a question in the first paragraph!
Do you mean "he had come"? In that case, the answer would be verb past tense.
I don't think my answer is correct but I think The secret is that the Robin played eggs because the Robin lays eggs on a nest on the sweet cherry-tree.
I dont know the answer so I just guessed but I hope it helped!
Wax is susceptible to heat and water.
It melts in heat, and dissolves in water.