Answer:
D.
Step-by-step explanation:
I'm assuming this is the question:
Which of these is the best example of Jackson doing science by inquiry?
A. Jackson watches a video on objects sinking and floating. He
writes down all the main points of the video.
B. Jackson researches the history of soda can use, including how the
size of the cans has changed over the last three decades.
C. Jackson finds calculations on sinking and floating. He copies one
of the calculations.
D. Jackson asks himself whether unopened soda cans sink or float.
He designs an experiment to find out.