Answer:
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.