The correct answer is D. process.
A process is a series of steps that are followed in order to achieve a desired outcome. In the case of planning financial aid, the process would involve identifying the needs of the students, developing a plan to meet those needs, and implementing the plan.
A budget is a financial plan that outlines how money will be spent. In the case of financial aid, the budget would need to account for the cost of tuition, fees, room and board, and other expenses.
Batching is a technique that is used to group tasks together so that they can be completed more efficiently. In the case of financial aid, batching could be used to process applications or to send out financial aid awards.
Complexity is a measure of how difficult something is to understand or do. In the case of financial aid, the complexity of the process can vary depending on the number of students who need assistance and the amount of money that is available.
Therefore, the correct answer is D. process.