You are trying to convince your parents to send you to Europe. First, you ask them for a small favor (a bus ticket to a local city), hoping that later they will be more willing to send you on the longer trip. This technique is known as:

foot-in-the-door phenomenon        

Explanation:

You are trying to convince your parents to send you to Europe. First, you ask them for a small favor (a bus ticket to a local city), hoping that later they will be more willing to send you on the longer trip. This technique is known as foot-in-the-door phenomenon.

Foot-in-the-door phenomenon is the tendency for individuals to agree to a large request after first agreeing to a smaller request. The believe that your parents will be more willing to send you on a longer trip after allowing you on a shorter, within town trip is a foot-in-the-door phenomenon.

it would be d). more resources must be obtained to attain that combination of goods and services

stewards ice box was the purchase of alaska from russia and it was called that because people thought it was not a good idea to purchase alaska