13. what are a few things that indicate a high-quality child care program?

a. the staff is trained in child development, and the physical environment is designed to promote active involvement and constructive interactions.
b. there is no set program and the staff is highly trained.
c. the staff has minimal training but is supported, the program isn't well managed but has someone supportive, and the physical environment promotes quiet play only.
d. caregivers occasionally receive continued on-the-job training.

Wo firms, a and b, each currently dump 50 tons of chemicals into the local river. the government has decided to reduce the pollution and from now on will require a pollution permit for each ton of pollution dumped into the river. it costs firm a $100 for each ton of pollution that it eliminates before it reaches the river, and it costs firm b $50 for each ton of pollution that it eliminates before it reaches the river. the government gives each firm 20 pollution permits. government officials are not sure whether to allow the firms to buy or sell the pollution permits to each other. what is the total cost of reducing pollution if firms are not allowed to buy and sell pollution permits from each other? what is the total cost of reducing pollution if the firms are allowed to buy and sell permits from each other? a. $3,000; $1,500 b. $4,500; $3,500 c. $4,500; $4,000 d. $4,500; $2,500