Ordering people by increasing daily energy requirements

Steps:

• Identify energy values in row A as increasing: 7500kJ (lowest) to 15000kJ (highest).
• Assign lowest energy to 6-year-old child, based on age and activity level.
• Assign next to pregnant woman, due to additional fetal needs.
• Assign 10500kJ to male labourer, reflecting high physical demands.
• Assign highest to teenage girl, accounting for growth and puberty demands.

Why B is correct:

• B sequences people from lowest to highest energy needs, aligning with basal metabolic rate (BMR) principles where children have ~6000-8000kJ, pregnant women add ~1000-2000kJ, laborers expend extra via activity, and teens require growth energy.

Why the others are wrong:

• A lists energies, not people, so it doesn't match the query for people in the table.
• C misorders by placing teenage girl before male labourer, ignoring higher laborer expenditure.
• D starts with teenage girl (not lowest) and ends with male labourer (not highest), disrupting the increasing sequence.

Final answer: B