What is the infinitive phrase in this sentence? After reading about the events in world war ll, she wanted to visit the Holocaust museum?

A)After reading
B)About events in WW2
C)she wanted
D)to visit the holocaust museum
I think it's D, but then again I don't even know what an infinitive phrase is. Can someone please explain that too?

1 answer

http://owl.english.purdue.edu/owl/resource/627/03/

D is correct, but read this site to learn about infinitive phrases.