In what phase of research is the empirical component of science most clearly visible?

Although the Constitution does not explicitly give Congress the right to enact a military draft, which clause in the Constitution allows Congress to do so?

(A) Necessary and proper clause (B) Take care clause (C) Taxing and spending clause (D) Due process clause of the Fourteenth Amendment (E) Equal protection clause of the Fourteenth Amendment

A __________ is a collection of policy-oriented researchers and academics who are sources of policy ideas

a. caucus b. convention c. political machine d. think tank