is

British mathematician

an appositive

i got 10/10 on this practice test dramatic transformations here are all the answers

1part a paragraphs 2-11
part b losing the airplaine without ever flying it
2 part a stomping and chanting
part b paragraph 26
3 he is supportive
4 to instruct actors how to move
5to make the corners of your mouth turn up in an expression of happiness
6taylor smirked when the others got it wrong
7to connect a noun or pronoun to another word
8into the beaker
9charles lutwidge
10when it is not essential to understand the sentence

what's the full sentence?

British mathematician Charles Lutwidge Dodgson used the pen name Lewis Carroll.

No. British mathematician is not an appositive.

http://www.chompchomp.com/terms/appositive.htm

yeah i agree

is it pen name?

No.

I've checked two of your guesses. You're on your own now.

is it Lewis Carroll or Charles Lutwidge Dodgson

Angelina?

yes you are correct

the second one Charles Lutwidge Dodgson