What is the greatest restriction on appeals in the United States?

Question

a. the refusal by state appeals court judges to grant even a first appeal
b. a federal law that bars in most instances a second federal appeal by a state prison inmate
c. the lack of any formal right of appeal in the federal process
d. a federal law that bars a first federal appeal to persons convicted of homicides

e. the very low income of some convicted persons, which reduces their ability to appeal

My english is not very good, what are they asking for in the question?

If it is what I think it is then it is a.
please healp.

Answer 1

The question is asking for the greatest restriction on appeals in the United States. The answer is d. a federal law that bars a first federal appeal to persons convicted of homicides.