**Core Concept**
Elastic cartilage is a type of cartilaginous connective tissue characterized by the presence of elastic fibers, which provide flexibility and resilience to the tissue. This unique composition allows elastic cartilage to support structures that require both flexibility and mechanical strength.

**Why the Correct Answer is Right**
Elastic cartilage is found in areas of the body where flexibility is essential, such as the external ear (pinna), epiglottis, and laryngeal cartilages. The elastic fibers in this type of cartilage are embedded in a matrix of collagen and proteoglycans, which provides additional strength and support. The presence of elastic fibers allows elastic cartilage to maintain its shape and return to its original form after deformation, making it ideal for structures that require flexibility and mechanical strength.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because elastic cartilage is not typically found in weight-bearing joints, such as the knee or hip, where hyaline cartilage or fibrocartilage is more common.
**Option B:** This option is incorrect because fibrous cartilage, not elastic cartilage, is found in areas such as the intervertebral discs, where it provides support and shock absorption.
**Option C:** This option is incorrect because hyaline cartilage, not elastic cartilage, is found in areas such as the articular surfaces of bones, where it provides a smooth surface for joint movement.

**Clinical Pearl / High-Yield Fact**
Elastic cartilage is highly resistant to compression and can withstand significant mechanical stress without deformation. This unique property makes it an essential component of structures such as the external ear, which requires both flexibility and mechanical strength to maintain its shape.

**Correct Answer:** D.