Which/What period in time would you love to go back to?

[Trap.jaw.800]

Which one is correct.

Which period in time would you love to go back to?

or

What period in time would you love to go back to?

Thank you.

 

[teechar]

Note that "what" is broader than "which", but both are possible. The context may make one more suitable than the other.

 

[Barque]

Which one is correct.

Like your two examples, this needs a question mark too.

 

[Trap.jaw.800]

Like your two examples, this needs a question mark too.

Sorry about that.

 

[Tarheel]

The "go back to" part suggests that the person has been there before. Perhaps: "What era in time would you like to visit?"

 

[5jj]

The "go back to" part suggests that the person has been there before.

I think the meaning is 'back in time'.