Reciprocity is an industrial buying practice in which:

a. two organizations agree to purchase each other's products.
b. sellers make deliberate efforts to build relationships with their suppliers to encourage improvement in their products.
c. two or more parties participating in the buying decision process.
d. a buyer agrees to a larger order in exchange for a quantity discount.

The correct answer is letter "A": two organizations agree to purchase each other's products.

Explanation:

In the corporate world, reciprocity is a term used when two firms engage in an agreement of purchasing goods and services between them. The agreement does not include both parties are exclusive providers of one another but establishes a fiduciary relationship between the companies which can lead to them providing more tailored products.  

Buyers with more technical knowledge and expertise tend to make reciprocity agreements with other entities.

answer; ///(d); determining who competes most closely   with whom evaluating whether industry driving forces and competitive pressure favor some strategic groups and hurt others, and ascertaining whether the profit potential of different strategic groups varies due to the strengths and weaknesses in each groups respective market positions;

false is correct i hope.

i might be