Which of the following about the scientific method is not true​

The answer should be a

This is what i found on google “phytoplankton, tiny organisms that live in the ocean, are autotrophs. some types of bacteria are autotrophs. most autotrophs use a process called photosynthesis to make their food.” i hope this you for what your looking for

The higher you go up the less oxygen there is 

To wear the full equipment.