BEST ANSWER GETS BRAINLIEST Which statement is true about a euglena, paramecium, and amoeba?

A. They use different structures to control cell activity.

B. They all make their own food by photosynthesis.

C. They all have eyespots to sense light.

D. They use different structures for movement.

Astudent poured a solution of bromothymol blue indicator into three test tubes. then he placed an aquatic plant in two of the test tubes, as shown below. he placed a stopper on each test tube and placed them all in the dark for 24 hours. bromothymol blue turns from blue to yellow in the presence of co2