I believ it to be A for he belived that the repulicans had integrity
The correct answer for the question that is being presented above is this one: "with." You sell T-shirts in a market with price controls, where you charge the equilibrium price. The equilibrium price is already the best selling price that you can impose to a certain product.
The main idea of the paragraph would be the penguins camouflage and feathers help them in their survival
3 supporting facts would be: it makes them hard to see in the ocean for predators, they blend with they sky, their feathers protects them while swimming and keeps them warm.
(this could be worded better but yeah, hope I could help!)
Buck has always had a strong connection