Answer:
The correct answer is telemarketing.
Explanation:
Telemarketing is a form of direct marketing in which an advisor uses the telephone or any other means of communication to contact potential customers and market products and services. Potential customers are identified and classified by various means such as their purchase history, previous surveys, participation in contests or job applications (for example, via the Internet). Names can also be purchased from another company's database or obtained from the phone book or other public or private list. The classification process serves to find those potential customers most likely to buy the products or services that the company in question offers.
Solution :
a). Bundles 
= U ( _____ , 2), lie on the same indifference curve. Suppose missing numbers is x.
So, 
(40 x 5) + (2 x 5) = 50x + (2 x 2)
210 - 4 = 5x
So Alexander has 
apples and 
bananas. The indifference curve though also include bundle.
Therefore, (41.2, 2)
b). 
= 0.4
So Alexander has apples and bananas with this bundle. Alexander would like to give up 
unit apples for a banana.
