D. Mountains and Basins.
Hope this helps!
<span>Products that customers consider essentials or necessities tend to have less elasticity than products viewed as luxury or discretionary. If a customer believes he needs a certain product for survival, quality of life, or pleasure, he is more likely to stretch a bit to purchase the item if the price goes up. On the contrary, a product viewed as optional is a less likely purchase as the price increases because the customer believes he can live without it.Customer OptionsThe more options a customer has to meet a particular functional or emotional need, the more elastic a product's demand. This is why a company with a monopoly has a huge advantage. Customers don't have options and feel compelled to buy from the given provider. In highly competitive industries, price differentials are usually less among competing brands because of the ability customers have to select lower-priced alternatives. A closely related factor is the cost of switching brands. Cell phone customers often wait to change providers to avoid penalties if they are obligated to service contracts.
</span><span />
Launched In Low earth Orbit In The Year 1990
Answer: according to how the summary of the research should be, the variables are; "social media was used for recruiting is the explanatory variable, and college enrollment is the response variable".
Explanation: Variables are determining conditions of a result. In this research, we have two variables, one is an effect and the other is an outcome. From the research paper title, we can see effect of recruiting through social media to determine the out come of college enrollment rate.
In a research work, we study the effect and observe the outcome.
The research will try to explain the effect of social media been used for recruiting, and then the response of college enrollment. That means if we increase or reduce recruitment through social media how will college enrollment respond. This makes using social media for recruiting to be the explanatory variables and college enrollment to become the response variables.