Answer: c. business-to-consumer
Step-by-step explanation:
A company that is trying to sell to consumers directly would be trying to market its goods to those same consumers. To do so they would use various media such as local newspapers, online and in store marketing because this is where they know that they would find consumers.
The business in this scenario is doing this so it must be a business to consumer type company. Companies targeting other businesses would not advertise like this but through official channels with other companies directly.