Aproblem facing the timber industry is the absence of any effective way to prove that rain forest timber has been legally harvested. in places like indonesia, as much as 80% of timber available for sale is illegally cut. companies like home depot do not want to sell timber from illegally logged forests, even though demand is great for timber from rain forests. which of the following required for an exchange is missing when a company tries to sell illegally acquired logs to home depot?
a. each party has something of value to the other party.
b. there are at least two parties involved.
c. each party is capable of communication and delivery.
d. each party believes it is appropriate to deal with the other party.
e. none of the above.

Employees at a library check out books to patrons. books have an isbn and a name. the library sometimes has multiple copies of the same book. books have one or more authors. a patron is an individual who has an active (non-expired) library card. for each library card, we store the person's first and last names and their address. for each employee, we store their employee id, current salary, first and last name and their address. we also store the employee id of their current manager. each time we check out a book to a patron we need to store the date of the transaction, the employee who checked out the book to the patron, and the library card of the patron. some employees have library cards. if an employee patron turns in a book late, the fine that they pay is a percentage of their salary. some employees are authors who have library cards—they are allowed to check out as many books as they like.