Answer:
A) Marketing mix
Step-by-step explanation:
Carlota or Samantha are following a very short marketing mix strategy, she is basically focusing on the product (hot sauce + family recipe + locally grown peppers), the place (Ebay and Amazon + FedEx), and the price 8(she probably just decided to sell it at $9.95).
But she is lacking promotion or real marketing efforts like advertisement, publicity, sales promotions, etc. Word of mouth is probably the most effective tool in marketing, but it is also a very limited tool. The advantage of online sales is that you don't need a huge office with tens of people working besides you, you only need google ads for online advertising.