Correct option is B
The correct answer is(A) is true but (R) is false.
Assertion (A): We can cook food easily at sea level as compared to higher altitudes. This is true because atmospheric pressure is higher at sea level, which means that water boils at a lower temperature. Lower boiling point makes it easier to cook food.
Reason (R): At high altitudes, the boiling point of water increases. This is false. As you go to higher altitudes, the atmospheric pressure decreases, and as a result, water boils at a lower temperature. This can make cooking take longer or be more challenging at higher altitudes.
So, (A) is true but (R) is false.