The answer is A. learn shopping preferences to suggest or recommend items for customers to buy.
B. is incorrect because databases are not a developer tool for writing software. They manage and organize data for production use.
C. is incorrect, there are specific tools companies use for customer support.
D. is incorrect for similar reasons, specific tools exists like Applicant Tracking Systems (ATS) to help companies vet candidates, and the company will have an HR product they use for onboarding (ex: BambooHR)
