Which of the following is NOT a determinant of supply?

The correct answer highlights that climate conditions are not a determinant of supply in the traditional economic sense. In economic theory, the determinants of supply typically include factors that directly influence a producer's willingness and ability to offer goods or services for sale. These factors include the cost of production, which directly affects the profitability of producing goods; entrepreneurs' expectations about future market conditions and potential sales, which influence their decisions on how much to produce; and the price of other goods, which affects how resources are allocated among different products.

While climate conditions can indeed impact supply in specific contexts—like agricultural production—these factors are more situational and affect certain industries rather than being a general determinant applicable to all types of supply. This makes climate conditions less consistent as a determinant when compared to the economic principles that guide supply behavior universally across markets.