Sure, let me try to help you on this one.
There are many things that might fall under the right answer; however, the most logical one would be grant.
Grants and loans are the most common types of financial aid a student can possibly get, former being a privilege given to students who excel in studies or have proven themselves as worthy candidates for whatever college they are applying to.
The concept of correlated constraints suggests that behavior development involves the interconnected contributions of multiple factors working together as a system.
The three forces could be lift drag weight