Is the Indicated Bond Electrophilic or Nucleophilic?

[JBD]

I would like to clarify this particular question.

According to the answer key, the answer is D.

However, I argued to my friend that there may be an error in this question. The arrow is pointing toward a carbon atom so the question might have been " The indicated carbon atom is:". But if you take the question as it is, I answered C since I think that the "indicated bond" is the double bond and therefore nucleophilic and electron-rich. If it is not the double bond then what is the indicated bond in this question? And is it possible for a single bond to be electrophilic or nucleophilic? Thank you very much.

 

[TeethWhitener]

It is a poorly worded question. The carbon atom that's indicated is electrophilic. And occasionally we refer to bonds as electron rich (and attacked by electrophiles, especially when discussing electrophilic addition to alkenes). The important thing is that you understand what's going on, which it seems like you do.