Concept:Checks and balances allow one arm of government to limit or question the actions of another arm.
Explanation:The legislature is the law-making arm of government.
Its main oversight role is to review and scrutinise the actions of the executive.
Demanding a review of an executive act is a constitutional and lawful means of checking the executive.
Withholding ministers’ salaries is not a direct legislative check because salaries are usually fixed by law or commission.
Reporting the executive to the supreme court is a judicial function, not a legislative one.
Delaying ambassadorial postings is not a formal check and may harm diplomatic relations.
The most appropriate check is therefore to demand a review of any executive act.
Answer:A. demanding the review of any act of the executive