When you say happy birthday and they reply you what do you say'?

Normally I would say, "Yeah! I hope you have a great birthday!" if I want to continue the conversation or a question related to that, or a simple you're welcome always works.

"I guess you can say something like, have a great rest of your day, bye!" if your leaving  but if not, "How has it been so far?"

i'm pretty sure i had this question the other day and b was the right answer.

the figurative meanings of these lines are questioning the tyger's strength and beauty. the meaning contributes to the overall message of them poem because it is explaining how strong the tyger is.

now just elaborate off of that. : )