Due to coal ash leaking into groundwater aquifers in Florida, drinking well water may be unsafe for many Floridians. Thus, these individuals shift to bottled water instead. To monetize (i.e., value) the benefits of this shift, one could consider:
a) The cost of treating contaminated water
b) Decreased medical expenses due to improved health
c) The price elasticity of demand for bottled water
d) The environmental impact of producing bottled water