The correct answer is D. You will request the institute administration to make a policy for helping such students.
The other options are not as effective in helping the student. Option A, purchasing the book yourself, is a good option, but it is not sustainable in the long run. Option B, collecting a fund from others, is also a good option, but it can be difficult to raise enough money. Option C, providing the books from the library, is a good option, but it may not be possible if the book is not available in the library.
Option D, requesting the institute administration to make a policy for helping such students, is the most effective option because it will ensure that all students who are unable to afford books will be able to get them. The institute administration is in a better position to raise money and to purchase books for students who need them. They can also make arrangements for students to borrow books from the library or to get them from other sources.
In addition, option D is the most ethical option. It is the responsibility of the institute to provide all students with the resources they need to succeed. By requesting the institute administration to make a policy for helping such students, you are ensuring that all students have an equal opportunity to succeed.