Answer:
the correct answer is A. engaged in direct selling but is part of an indirect channel.
Explanation:
if you can see, ravi is actually dealing with his customers head on and maintain a direct and friendly relationship with them, the question states that he even makes presentations to customers at their homes. so there is no doubt that he is engaged in direct selling!
but the indirect channel he use is the way he gets the goods to sell. here he buys them from a supplier and sell them at a markup price. although this might be an indirect way, it does not mean that he is not engaged in "direct marketing". marketing aspect relates to how the seller is engaging with the market and customers.