Question

The major focus of sellers in this market structure is branding and marketing

(Monopoly, Oligopoly, Monopolistic competition, pure/perfect competition)

Answer 1

the answer would be monopolistic competition 

Answer 2

Monopolistic Competition.

This is because it has multiple different firms competition against one other since the barrier of entry is low. The products are similar, but not identical, and are differentiated from one another through heavy branding and marketing.