When researchers replicate a study, they are seeking to
a) prove that the hypothesis upon which the study was founded is untestable
b) develop a new hypothesis
c) change the study to provide new results
d) support or reject the hypothesis upon which the study was founded

So i have a lot of answers answered but it says i still need to answer more questions. why is it doing that? how many questions need to be answered?

Group of genes that encode molecules found in all body cells, creating a biochemical “fingerprint” that serves as the “id” for cells so that they are marked as “self” a) deoxyribonucleic acid (dna) b) entry inhibitors c) major histocompatibility complex (mhc) d) non-nucleoside reverse transcription inhibitors (nnrtis)

What should you not do when doing abdominal workouts? a. keep your chin off your chest b. keep your head aligned with the spine c. put pressure on your neck d. all of the above