Koree loves to put Downy Unstopables in his laundry. The fresh smell makes him feel more confident throughout the day. He's noticed that the small pack of Unstopables is slowly becoming more expensive. It was $$6\mathrm{.}25$ last year, and now it's $$7\mathrm{.}99$ in the same store. He's starting to think his cologne can do the same job as the Unstopables, as his pay doesn't increase by $$1\mathrm{.}50$ every year. Which environmental factor should Downy be more sensitive to$?$

a$.$ Economic factor

b$.$ Social factor

c$.$ Technological factor

d$.$ Regulatory factor