[discodermolide]

Nope, that is an enol or more likely a ketone.
Think about how dilute sulphuric acid reacts with C=C bonds.
Hint: carbonium ions.

[spinx625]

Is there a methyl shift after the carbocation is made?

[Altered State]

No migration required.
Have you been taught alkenes reactivity?

[spinx625]

Yes, I forgot to get rid of double bond. I tried this structure for compound C:


It turns out the structures for A, B, and C are incorrect.

I also tried starting with 4-bromoheptane as suggested by a user from another forum. Also incorrect.

[discodermolide]

then try one of the other compounds like the other alkene you suggested way back near the start of this!

[orgopete]

Two things, the structure seems as though it should have been a correct answer from the information given. Secondly, I thought the answer they were going for was more symmetrical. I am thinking of an ethylpentane.

[spinx625]

You're right, it was 3-bromo-3-ethylpentane for compound A. Thanks for all the help guys!