Gce Model Questions Vol1 2022 Geography Question 24

Practice objective / multiple choice question 24 from the 2022 Gce Model Questions Vol1 Geography examination.

Gce Model Questions Vol1 2022 Geography Objective / Multiple Choice Hard Difficulty
Question 24 GCE_MODEL_QUESTIONS_VOL1 • 2022 • GEOGRAPHY • objective

Three environmental hazards have the following estimated annual probabilities and potential economic losses:\\ - Flood: probability \(2\%\) per year, loss \(500\) million Naira.\ - Landslide: probability \(0.5\%\) per year, loss \(800\) million Naira.\ - Industrial accident: probability \(1\%\) per year, loss \(300\) million Naira.\\ Mitigation options are:\ - Flood barrier costing \(50\) million Naira, reducing flood probability by \(60\%\).\ - Slope stabilization costing \(80\) million Naira, reducing landslide probability by \(70\%\).\ - Safety training costing \(20\) million Naira, reducing industrial accident probability by \(50\%\).\ (a) Calculate the risk score (probability × loss) for each hazard.\ (b) For each mitigation, compute the new risk score after implementation and the risk reduction per million Naira spent.\ (c) Which mitigation provides the greatest risk reduction per unit cost?

Answer Options

A. The landslide stabilization; it reduces risk by 5.6 million Naira at a cost of 80 million Naira, giving the highest reduction per unit cost (0.07 million risk reduced per million Naira).
Correct Answer B. The flood barrier; it reduces risk by 6 million Naira at a cost of 50 million Naira, giving the highest reduction per unit cost (0.12 million risk reduced per million Naira).
C. The safety training; it reduces risk by 1.5 million Naira at a cost of 20 million Naira, resulting in a reduction of 0.075 million risk per million Naira, which is the greatest.
D. The flood barrier; it reduces risk by 6 million Naira at a cost of 50 million Naira, but the safety training provides a higher reduction per unit cost.
Correct Answer
B
Correct Option:
The flood barrier; it reduces risk by 6 million Naira at a cost of 50 million Naira, giving the highest reduction per unit cost (0.12 million risk reduced per million Naira).

About This Question

This is Gce Model Questions Vol1 2022 Geography Question 24. It is one of the objective questions from the 2022 Gce Model Questions Vol1 Geography examination.

Difficulty level: Hard .

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