Summary
Direct subsidized loan is one type of student loans that's available for undergraduate students.
Interest rate: 4.99%
Requirement:
1. apply through federal aid website or school financial website
2. enroll at school at least half time
Pros:
1. no need to check your credits
2. pay interest after leaving school
Cons:
1. may be not eligible for large amount
2. students who need to borrow $3500-5500 per year
Reference: https://www.forbes.com/advisor/