Use the climatic data to answer the question below Month Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec…

Analyze the question: The question asks for the annual range of temperature, which is the difference between the highest and lowest monthly mean temperatures in the year.

Concept: Annual range of temperature = Highest monthly mean temperature − Lowest monthly mean temperature

Solution:

From the data:

• Temperatures: 26, 26, 26, 26, 26, 27, 27, 28, 28, 28, 27, 27
• Highest temperature = 28°C (August, September, October)
• Lowest temperature = 26°C (January to May)

Annual range = 28°C − 26°C = 2°C

Checking the options:

• A. 1°C: too small, it would only be the gap between adjacent values.
• B. 2°C: matches our working.
• C. 22°C: not supported by the data.
• D. 28°C: this is just the maximum temperature, not the range.

Tip: "Range = Highest − Lowest." Students often pick the highest value by mistake, so always subtract. A small range like 2°C is typical of equatorial climates, which have uniformly high temperatures all year. The heavy rainfall (up to 250 mm) with a small temperature range also points to a tropical or equatorial region such as southern Nigeria.