Arnazon continues to innovate in logistics as it sees the need to meet consumers' increasing de for the quick delivery of products purchased. Amazon's strategic emphasis on this component of th marketing mix reflects which of the following?

a$.$ changing demographic factors

b$.$ changing environmental factors

c$,$ changing social factors

d$.$ consumer privacy

Which of the following best defines promotion in the marketing mix?

a$.$ quantifying a value in exchange for a company's offering

b$.$ tangible and intangible aspects of a company's offering

c$.$ making an offering available to the customer

d$,$ the visible activities of marketing