Which is more natural?
I think both:
am wondering if
was wondering if
are correct, depending on the tense you use. I however could vote for only one option! :(
I chose No. 1 and remember that context is very helpful.
I choose No. 3 of course...
I chose #3, but would prefer #4 if I added the phrase "or not" at the end.
i choose 3 this is correct tense