Question

Assertion (A) : A person goes to high altitude and experiences ‘altitude sickness’ with symptoms like breathing difficulty and heart palpitations. Reason (R) : Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen. In the light of the above statements, 
choose the correct answer from the options given below

• A. (A) is false but (R) is true
• B. Both (A) and (R) are true and (R) is the correct explanation of (A)
• C. Both (A) and (R) are true but (R) is not the correct explanation of (A)
• D. (A) is true but (R) is false

Answer 1

The Correct Option is B

To address this question, we need to evaluate the given statements: Assertion (A) and Reason (R), specifically their accuracy and the relationship between them.

1. Understanding Assertion (A):
   • Assertion (A) states that a person experiences "altitude sickness" characterized by symptoms such as difficulty in breathing and heart palpitations when at high altitudes.
   • This is a true statement because at high altitudes, the environmental conditions pose challenges for human physiology, resulting in altitude sickness, which includes the symptoms mentioned.
2. Understanding Reason (R):
   • Reason (R) explains that at high altitudes, the atmospheric pressure is lower, and as a result, the body does not receive sufficient oxygen.
   • This is also a correct statement. At higher altitudes, the amount of oxygen available for breathing decreases because of reduced atmospheric pressure. This forces the body to work harder to get enough oxygen, leading to symptoms such as those cited in the assertion.
3. Analyzing the Relationship Between A and R:
   • The assertion highlights the symptoms experienced at high altitudes, and the reason gives an explanation for these symptoms.
   • Both statements are logically connected, as the explanation provided in (R) directly addresses why the symptoms mentioned in (A) occur. Therefore, (R) correctly elucidates (A).
4. Conclusion:
   • The correct option is: Both (A) and (R) are true and (R) is the correct explanation of (A).

This solution concludes that the correct answer provides a coherent explanation for why a person experiences altitude sickness symptoms at high altitudes, supporting the connection between the assertion and the reason given.