Read the following advertisement and mark the letter A, B, C, or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 1 to 6.

CHATBOT
It’s now common ___(1)___ online with a chatbot, a type of AI. One advantage chatbots have for business owners is that they can be autonomous and provide 24/7 customer service. While they are responding ___(2)___ your customers, your human agents can use their time to focus on cases ___(3)___ a human ___(4)___. Chatbots can also collect data to help you ___(5)___ to know your customers’ needs and the types of products they want. Chatbots are an efficient way to help improve your customer service experiences. They are adaptive and predictive, so they only present information that meets your customers’ needs. Because they are more ___(6)___ and efficient, they find innovative ways to promote different products while they interact with your customers.
(Adapted from English Discovery)