Advertisements that feature promotions such as buy-one-get-one-free offers essentially signal that customers will get value in some form of a reward when they perform a specific purchasing activity. these offers employ the strategy of

The answer to the blank space is discriminative stimuli.

A discriminative stimulus means that this thing differs from the others – and thus the person who perceives it will be more likely to be attracted to it. Buy one get one deals are essentially this type of stimulus since people are more likely to gravitate to it than other deals because they believe they will get a better deal by choosing to purchase the item.

answer; communities of interest; i believe this is correct, plz check first good luck;

it's actually a very difficult task, due to not many people can make 2 million dollars in 2 years. besides that, to the not-so-realistic ideas, you can create a business. it could be practically anything, but make it into a business that isn't that known yet, you get me? also, lets not forget about stock market. that's where all the good stuff happens. use investments at the beginning and begin to raise up your business or whatever you're going to do. as this is a very non-realistic idea, it's still worth the shot!