The correct answer is: B. 1,50,000 m3.
The average daily consumption of a city is 1,00,000 m3. This means that the city consumes an average of 1,00,000 m3 of water per day. However, the consumption of water is not constant throughout the day. There are times when the consumption is higher, such as during peak hours, and times when the consumption is lower, such as during off-peak hours.
The peak hourly demand is the highest amount of water that is consumed in a single hour. It is usually during the morning and evening when people are showering, washing dishes, and doing laundry. The peak hourly demand can be much higher than the average daily consumption.
In this case, the average daily consumption is 1,00,000 m3. The peak hourly demand could be as high as 1,50,000 m3. This means that during the peak hour, the city consumes 1,50,000 m3 of water, which is 50% more than the average daily consumption.
The other options are incorrect because they are not consistent with the information given in the question. Option A is the average daily consumption, which is not the peak hourly demand. Option C is the average daily consumption plus 50%, which is too high. Option D is the average daily consumption plus 100%, which is too high.