The office of management and budget
a. ensures that state governments do not spend outside of their budget
b. checks the power of the president by limiting the money he/she can spend on programs
c. oversees the preparation of the federal budget
d. is part of the legislative branch of the federal government

The correct answer is C.

The Office of Management and Budget (OMB) is the largest Executive office of the US President, which is in charge of designing the President's Budget. It also supervises the quality and efficiency of agency programs, checking on whether they comply or not with the policies issued by the president and coordinates the initiatives from the different agencies.

d

explanation:

i think that this is the best answer, but im sorry if this is wrong