Which statement best describes scientists who contributed to the current
body of scientific knowledge?
o
a. they were wealthy men during the 20th century.
o
b. they were mainly ancient philosophers whose theories stood the
test of time.
c
.
they were mainly from european countries such as england and
france.
o
d. they were made up of men and women throughout history from
different countries.

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !