Concept:The pinna of the outer ear is supported by flexible connective tissue called elastic cartilage.
Explanation:The pinna is the visible outer part of the ear.
It is not supported by bone, blood pressure, or turgor pressure.
Elastic cartilage provides the pinna with firmness and flexibility.
This cartilage allows the pinna to bend and return to its normal shape.
It gives the ear its distinct structure and strength.
Blood pressure only fills blood vessels and does not give the ear its shape.
Turgor pressure is a plant cell phenomenon, not found in the ear pinna.
Therefore, the pinna is strengthened by cartilage.
Answer:B. cartilage