Note two changes in the determination of supply that would result in a decrease in supply of a product

 Two changes that determinants of supply that can reduce the supply of a product are Tecnology and Imput Prices. When production gets more efficient, Technology is a help in the increase. But if Technology decreases and makes the product less attactive, it decreases the quality and the supply. Imput Prices increasing will cause the supply decrease.

polling is a process and the outcome is not involved in the process itself.

the outcome, which is an unfavorable rating for a particular candidate is not affected by the mechanical process of polling.

it rather depends on the number of people voting in favor of the candidate.

this is an outcome of people's preferences.

b. second continental congress