Answer: D. Even though it is expensive, studying abroad is an excellent opportunity for many students.
Explanation:
The best way to rewrite the thesis statement is that "Even though it is expensive, studying abroad is an excellent opportunity for many students".
Option A is incorrect as the benefits of studying abroad wasn't given in the original thesis but was explained here.
Option B is incorrect as the thesis statement doesn't state if it was for college student or not but this was stated here.
Option C is incorrect as it wasn't stated if it'll be beneficial for those seeking employment.
Option D is the correct answer as it gives an exact statement.