c. fun fact, in just one day, kelp can grow up to half a meter! It can grow to as much as 80 meters! Which is about 260 feet!
Kelp and various types of seaweeds are examples of brown algae, which belong to the group known as Phaeophyceae. They are primarily marine and exhibit complex structures that make them essential in marine ecosystems. Therefore, the correct option is c. brown algae .
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