Which of the following is a factor that can lead to a decrease in supply?

A decrease in supply can occur due to a variety of factors, with adverse weather conditions being a significant one. When adverse weather conditions, such as droughts, floods, or storms, affect production processes or the ability to access resources, they can hinder producers' ability to supply goods to the market. This disruption not only decreases the amount of product available but can also lead to increased production costs, further compounding the supply issue.

In contrast, subsidies typically provide financial support to producers, encouraging them to produce more rather than less. Technological advancements generally enhance productivity and efficiency, allowing for an increase in supply. An increased number of firms in a market tends to create more competition and usually leads to higher overall supply as new firms enter the market to meet consumer demand.