This is an electrophilic addition reaction where HBr adds to an alkene following Markovnikov's rule. The hydrogen adds to the less substituted carbon, and the bromine adds to the more substituted carbon, forming the more stable tertiary carbocation intermediate. The major product is the tertiary alkyl bromide.

The correct structure is the tertiary bromide: $Br-C{C}_C-C(C{)}_2$

Final Answer: Option 2