As per the question, school psychologists are permitted to do all the given actions except for 'providing medication for students' as they function in the school as counselors who primarily work for assisting the children to overcome the depressing and stressful situations.
However, they are allowed to make recommendations relating to modifications that can help them overcome a situation or recommendations regarding curriculum and they are also permitted to enhance the learning environment by modifying the atmosphere or introduction of various activities that would offer a more healthy and stress-free environment to the students for learning. <u>To prescribe medications, a psychologist requires a post-doctoral degree to prescribe medications which the school psychologists usually don't possess and hence, they cannot prescribe medicines.</u> Therefore, <u>option B</u> is the correct answer.