Answer:
D, form rings and chaines i think
Explanation:
This allows the Carbon to form long chians with elements such as hydrogen and phosphorus, etc, used some info from this site
https://courses.lumenlearning.com/wm-nmbiology1/chapter/carbon-and-carbon-bonding/
if my answer helps please mark as brainliest.
3rd and 4th awnsers are correct
the process plants use to produce food is photosynthesis.
the answer is food (food in the presence of starch=sugar) and oxygen.