Which of the following involves signaling?

Which of the following involves signaling?
 a. high wage rates attracting a larger pool of applicants for a job
  b. firms taking advantage of outsourcing when transactions costs are low
  c. reporting one's college GPA on a resume
  d. paying higher wages to workers who produce more
  e. requiring the sales staff to work strictly on commission

QUESTION 2

A Midwestern wheat farmer faces a horizontal demand curve because
 a. it is so large relative to the market as a whole that it has no impact on market price
  b. it is so small relative to the market as a whole that it has no impact on market price
  c. it produces a good for which there are no substitutes
  d. it produces a good for which there are no complements
  e. it produces a good that no other firm in the industry produces

QUESTION 3

A price searcher is any firm that has no control over price and must accept the market price as given.
 a. True
  b. False

QUESTION 4

A signal works best if
 a. it is acquired with equal ease by all workers
  b. it is not acquired with equal ease by all workers
  c. it is not understood by the employer
  d. it is not understood by the employee
  e. wages are allowed to vary

QUESTION 5

A perfectly competitive firm is a price taker. Therefore, it faces a
 a. perfectly elastic supply curve for its output
  b. perfectly elastic demand curve for its output
  c. perfectly inelastic supply curve for its output
  d. perfectly inelastic demand curve for its output
  e. unit-elastic demand curve for its output