A coal plant, operating in a suburban area, emits black smoke and produces air pollution. This is an example of which economic concept? (1 point)
A.
a positive externality, since the affected households can easily relocate to other communities
B.
a public good that benefits all the surrounding communities with abundant power
C.
a public good that is provided by an unregulated monopoly
D.
a negative externality, since the plant imposes an external cost on the surrounding communities

On january 8, the end of the first weekly pay period of the year, regis company's payroll register showed that its employees earned $22,760 of office salaries and $70,840 of sales salaries. withholdings from the employees' salaries include fica social security taxes at the rate of 6.20%, fica medicare taxes at the rate of 1.45%, $13,260 of federal income taxes, $1,450 of medical insurance deductions, and $860 of union dues. no employee earned more than $7,000 in this first pay period. required: 1.1 calculate below the amounts for each of these four taxes of regis company. regis’s merit rating reduces its state unemployment tax rate to 3% of the first $7,000 paid to each employee. the federal unemployment tax rate is 0.60