Answer:
A. OMB assembles the budget under presidential guidelines.
Step-by-step explanation:
The role of office management and budget is to oversee the preparation of the federal budget. It supervises the administration of the Executive branch and helps to plan the president's spending and evaluates the effectiveness of the agencies, policies, and demand for money by various agencies. It ensures that the rules and proposed legislation of various agencies are consistent with the president's budget and policies. It is also responsible for the financial management and regulatory policies. OMB tries to improve the management to prevent unnecessary burden on the public