Loggerhead sea turtles eat a variety of things including vegetation, jellyfish, and crabs. Young loggerheads have many predators, but the large adults are generally safe from all except large sharks and seals. Where would the loggerhead appear on a food web?

I'd say a primary consumer, or secondary.

the correct answer is c   with the systems

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above