Answer:
a. TV advertising is the correct answer.
Step-by-step explanation:
TV advertising is a types of advertising is most likely to help establish your company's credibility.
Advertising generates information about brands, goods, services, and plans.
A television advertisement conveys information expanding the market and encourages all other forms of advertising.
Television advertising help to increase sales and to propose a new product on the market.
Thus TV advertisement is the most common method of efficient brand information and help establish your company's credibility.