Aperfectly competitive firm's marginal revenue a) equals the market price of its product. b) decreases as the firm produces more output. c) increases as the firm produces more output. d) is less than the market price of its product.

its A for the question

classical republicanism, also known as civic humanism, is a form of republicanism  developed in the renaissance inspired by the governmental forms and writings of  classical  antiquity, especially such  classical  writers as aristotle, polybius, and cicero.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.