Management accounting systems are designed to assist organizations in the performance of all of the following functions except:

a. The preparation of income tax returns.
b. The assignment of decision-making authority over company assets.
c. Monitoring, evaluating, and rewarding performance.
d. Planning and decision-making.

d. Planning and decision-making

The correct answer is letter "A": The preparation of income tax returns.

Explanation:

Management accounting is in charge of providing valuable information to managers to assess them in the planning and decision-making of the company. Management accounting provides executives with different charts, tables, and analyses of the operations of the company and the resources available which helps them to make adjustments when necessary or to change different variables to maximize profits.

Management accounting is also helpful at the moment of measuring the performance of different components of the firm allowing them to create a system of reward for them.

The preparation of corporate income tax returns is an activity inherent in the accounting department that does not involve management in its process.