Which of the following options represents a season rather than a condition of a season?

The option representing a season is autumn. Seasons are distinct periods within the year characterized by specific weather patterns and daylight hours, and autumn is one of the four primary seasons, which also include spring, summer, and winter.

The other choices refer to temperature conditions or states that can occur during various seasons. "Cold" and "hot" describe the temperature but do not denote any particular season on their own, as both conditions can be experienced in different seasons. "Semi cold" also refers to a temperature characteristic rather than a defined season. Thus, among the options, autumn stands out as the only choice that names a specific season, making it the correct answer.