Congress passes the Federal Education Supplement Act which makes matching federal funds available to states for the construction and supplying of state schools on condition that states receiving such funds have academic programs that provide for only a one-month summer break period. The State of Oklexas has refused to amend its statutes to comply with the Act.

Which of the following persons is most likely to have standing to challenge the constitutionality of the Federal Education Supplement Act?

Select one:

a. A non-partisan political-action membership organization dedicated to the preservation of "states' rights" which believes that the Federal Education Supplement Act interferes with the state's right to regulate the curriculum of its schools.

b. A contractor that receives most of its business from school construction in Oklexas and which believes that without matching federal funds for Oklexas the state will be unable to honor its contract for school construction.

c. A taxpayer of the state of Oklexas who believes that if the state does not receive matching federal funds for the construction and supplying new schools, the state's schools will soon become inadequate for use by its residents.

d. A federal taxpayer who believes that if the state of Oklexas does not receive matching federal funds for the construction and supplying new schools, its students will adversely affect interstate commerce.