Answer: Options A & D

Explanation:

In the Neo-Classical macroeconomic model, investment is a function of the interest rate and not consumption. Consumption is a function of price, taste, and preferences. Furthermore, in a Neo-Classical macroeconomic model, markets are not only characterized by perfect competition, but there are also other market characteristics like pure competition, monopolistic competition, oligopoly, and monopoly.

Therefore, options A and D are not one of the features of the Neo-Classical macroeconomic model. Options B and C are among the features of the Neo-Classical macroeconomic model, in which wages and prices are fully flexible because of the influence of the forces of demand and supply, and total production is determined by aggregate demand.