Under extreme programming, and are intimately related parts of the same process

The answer to this question is: coding and testing
Extreme programming is a software development methodology that aim to improve software quality by measuring whether the technology can be used to fulfill customer's requirement.
To actually get somethings that is accepted by the customers, various coding and testing the software will be done constantly

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Company has asked employees for suggestions on ways to personalize the retail customer's shopping experience. they want to supplement traditional appeals to the customer. you have come up with several ideas. select the idea or ideas you have decided to submit.c. designate two of the curtained areas in the women's dressing room for nursing mothers  d. tailor merchandise in each store to the preferences of customers in that geographical region