As noted in Chapter 14, the exhaust and fly ash from the burning of coal releases many toxic chemicals harmful to life, including humans. For example, mercury is released into the atmosphere and is concentrated in animal tissues, leading to serious health problems such as neurological disorders. These indirect costs associated with the use of coal best represent __________.a. limited consumer knowledge and understanding
b. economies of scale
c. the challenges of unfamiliar technologies
d. externalized costs