Which word or phrase is an appositive in the sentence?

When Sandy met John—a scientist and critic—she fell in love with him.

6 answers

http://grammar.ccc.commnet.edu/grammar/phrases.htm#appositive
Let us know what YOU THINK it is.

PS -- The sentence is not punctuated correctly as it's written.
Which group of words is the complete infinitive phrase in the sentence?
It is important to avoid harmful exposure to the sun’s direct rays.
I'll be happy to check your answers.
When Sandy met John—a scientist and critic—she fell in love with him.

Which word or phrase is an appositive in the sentence?
John since there talking about him when they say "a scientist and critic".
Wait, Not John I meant "a scientist and critic" since that's the attribute being put on John.