Answer:
the answer is C. the lymph system
<span>Sclerenchyma cells are the strongest. They have a second cell wallwhich is hardened by lignin, making them very tough and durable.</span>
D. The Krebs cycle
Here’s the Explanation for it:
The Cellular respiration refers to the biochemical pathway in which the cells release energy from chemical bonds of food molecules. The energy that is provided is very important to the creation of life itself.
The aerobic phases of the cellular respiration in eukaryote is seen within mitochondria (organelles). This is know as the Krebs Cycle and the electron transport chain which are aerobic phases.
Hope this helps!
D would be the correct answer