Pls help ASAP, The Great Pyramids at Giza were built during which of the following periods? (1 point)

a
the Old Kingdom

b
the Middle Kingdom

c
the New Kingdom

d
the Roman occupation

PLSPLSPLS help thanks :)

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design