The answer is A
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Central Africa
Extending and sustaining water has remained to be a challenge. Health complications and even death have risen from sanitation and hygiene problems in Africa in general. Central Africa particularly needs urgent attention with the highest under-five mortality rate. Population growth, rural-urban migration, economic poverty all contribute to the water crisis in the region.
It was art. The Neolithic Age was known was the New Stone Age. It was a way of advancing the innovating the culture.
Answer: MAPE
Explanation: MAPE (Mean Absolute Percentage Error (MAPE) is a statistical measure of how accurate a forecast system is. It measures the size of the error in percentage terms.This scale sensitivity renders the MAPE close to worthless as an error measure for low-volume data where as MAD (Mean Absolute Deviation) measures the size of the error in units. Hence MAPE would be a more meaningful measure of forecast accuracy.