Answer:
Because the more they accomplish a task the more their rank will increase
I think it's C.) Ability to see deeply.
Because a negative tone would include words such as "not", "can't", and/or "won't"
B. everybodys' because they are more than one, i guess :P
Answer:
C. The seeds of sunflowers were used to make cooking oil.
Explanation:
"One way that they can make biofuel is by planting the sunflower seeds, harvesting them, taking the seeds, pressing them for their oil to create biodiesel and biofuel that could help run hybrid cars, so that people wouldn't have to use as much fuel".