Correct option is A, regularity with which people shop for gifts.
Lines 1-9 provide information on the subject. This is the portion of the introduction where it is specified how frequently individuals spend their money on gifts for others. Understanding is made simple and a sense of the gifting's intensity is made obvious via the use of examples.
B is wrong since, despite the writers' reference of "$30 billion" spent in retail establishments in a single month, that sum is never referred to as increasing (or a decrease). Choice C is inaccurate because lines 1–9 set the scene for the volume of shopping that takes place in the US, but they do not discuss the potential worry (or "dread") that it can incite.
Lines 1 through 9 illustrate more than just the variety of circumstances that lead to gift-giving, therefore choice D is unsatisfactory.
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