Agood study method is to
do all studying the day before the test so the information is fresh.
avoid wasting time outlining the text, and just read over the material.
avoid study guides and review the reading instead.
write your own practice tests and then take them.

in my opinion, ap calculus was the most difficult. i often struggled with it a lot. however, i have gotten a lot better.

harlem's  cotton club boasted the talents of duke ellington. singers such as bessie smith and billie holiday popularized blues and jazz vocals. jelly roll morton and louis armstrong drew huge audiences as white americans as well as african americans caught jazz fever.

i think your answers would be c and d☺