Answer:
I believe that the only way to really make an informed decision as to which test is a better fit for you is to take a full-length diagnostic exam for both the ACT and the SAT before doing any prep. I also would look at the pros and cons for each test.
I personally took the ACT because there is <em>NO PENALTY </em>for guessing on the test. An educated guess won't hurt your score on the ACT.
Answer:
d. If X is NP - complete and Y is in NP then Y is NP - complete.
This can be inferred
Explanation:
The statement d can be inferred, rest of the statements cannot be inferred. The X is in NP complete and it reduces to Y. Y is in NP and then it is NP complete. The Y is not in NP complete as it cannot reduce to X. The statement d is inferred.