**Core Concept**
Bone resorption in the mandible and maxilla is a natural process that occurs due to the loss of teeth. This is because the periodontal ligament and surrounding bone are no longer subjected to the normal compressive forces exerted by the teeth. The alveolar bone, which surrounds the tooth socket, undergoes resorption and remodeling, leading to a decrease in bone density.

**Why the Correct Answer is Right**
The correct answer, C, is correct because bone resorption is an independent process that occurs regardless of the presence of a denture. The resorption of bone is a result of the lack of functional loading, which is essential to maintain bone density. Even with a denture in place, the bone continues to resorb due to the absence of the natural tooth and its associated periodontal ligament. This process can lead to changes in the shape and structure of the jawbone, affecting the stability and fit of the denture.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because bone resorption is a natural process that occurs after tooth loss, regardless of the presence of a denture. The absence of functional loading leads to bone resorption, making this option incorrect.

**Option B:** This option is incorrect because bone formation is not a direct consequence of wearing a denture. While dentures can stimulate some bone growth, this is not a primary effect, and bone resorption remains a dominant process.

**Option D:** This option is incorrect because while there may be an initial phase of bone resorption after tooth loss, bone formation is not a subsequent process that occurs in response to wearing a denture. The bone continues to resorb, and any potential bone growth is not a direct result of the denture itself.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that bone resorption in the jawbone can occur even with a well-fitting denture. This highlights the importance of regular dental check-ups and proper denture care to prevent changes in the jawbone and maintain oral health.

**✓ Correct Answer:** C. Independent of denture, there is bone resorption