Which of the following describes a properly controlled experiment?

a. the weight of fifteen turtles is determined every day for three weeks.
b. twenty mice are given orange juice, while twenty plants are given water.
c. a debate is held to determine the greatest artist who ever lived.
d. five radish plants are grown in sunlight, while another five radish plants are kept in the dark.

D. Five radish plants are grown in sunlight, while another five radish plants are kept in the dark. 

Scientific method is a process that is ongoing. Based on the observations via properly done experiments, a scientist can come to a proper conclusion. Although the procedures followed during experiment may vary, but the final result should always be the same

He would absorb the wound