Answer: how well he can identify his target audience or market.
Explanation: Target audience or market refers to certain individuals, groups which a company or business has identified as being more likely to purchase one's goods or services. Once a target audience has been identified advertisement campaigns will be centered to capture this audience. The target audience may be people or groups of certain sex, race, occupation, geographic location. This way advertisement campaigns will be directed towards these group of people in other to ensure that the target market becomes aware of the company's product and services, the benefits and making the product easily accessible to the target audience.