Assertion`:-`In osteoporosis bone mass decreased and chances of fractures increased.
Reason `:-` Decreased level of estrogen is a common cause of osteoporosis.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are false.

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion:**
- The assertion states that in osteoporosis, bone mass decreases and the chances of fractures increase. This is a well-established fact in medical literature. Osteoporosis is characterized by reduced bone density, which makes bones more fragile and susceptible to fractures.

2. **Understanding the Reason:**
- The reason provided is that decreased levels of estrogen are a common cause of osteoporosis. This is also correct, particularly in postmenopausal women, where the drop in estrogen levels contributes significantly to bone loss.

3. **Analyzing the Relationship:**
- While both the assertion and the reason are true, we need to determine if the reason correctly explains the assertion. The assertion discusses the consequences of osteoporosis (decreased bone mass and increased fractures), while the reason focuses on one of the causes of osteoporosis (decreased estrogen levels).

4. **Conclusion:**
- Both the assertion and the reason are true statements. However, the reason does not directly explain why osteoporosis leads to increased fracture risk. Therefore, they are independent statements that are both true but not causally linked in the way the question suggests.

5. **Final Answer:**
- The correct option is that both the assertion and reason are true, but the reason does not correctly explain the assertion.

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