Refer to the pie chart below, based on the contributions made by different activities to the economy of South Africa, to answer QUESTIONS 2.1.6 to 2.1.8.

• A Electricity: $2\%$
• B Finance and insurance: $21\%$
• C Community: $18\%$
• D Manufacturing: $15\%$

$21\%$ (Finance and insurance) is the largest percentage among the options.

• B Finance and insurance contributes the largest percentage to the economy of South Africa.

2.1.7

The secondary sector typically includes manufacturing and construction. Electricity generation is also often classified under the secondary sector.

• Manufacturing: $15\%$
• Construction: $3\%$
• Electricity: $2\%$

If we sum Manufacturing and Construction: $15\% + 3\% = 18\%$.
If we include Electricity: $15\% + 3\% + 2\% = 20\%$.

The options are A 13, B 15, C 18, D 21. Since $18\%$ is an option, it indicates that for this question, the secondary sector is considered to be Manufacturing and Construction.

• The secondary sector contributes $\boxed{\text{C 18}}$ % to the economy of South Africa.

2.1.8

The tertiary sector includes services such as Finance and insurance, Community, Government, Wholesale and Retail, and Transport. Electricity, as a utility service, can also be considered tertiary in some classifications.

• Finance and insurance: $21\%$
• Community: $18\%$
• Government: $13\%$
• Wholesale and Retail: $12\%$
• Transport: $9\%$
• Electricity: $2\%$ (If considered tertiary/utility service)

• A Government: $13\%$ (Tertiary)
• B Electricity: $2\%$ (Often considered tertiary as a utility service, or secondary for generation)
• C Construction: $3\%$ (Secondary sector, not tertiary)
• D Finance and insurance: $21\%$ (Tertiary)

Comparing Government ($13\%$), Electricity ($2\%$), and Finance and insurance ($21\%$), Electricity has the smallest percentage at $2\%$. Construction is not a tertiary sector activity.

• B Electricity contributes the smallest percentage to the tertiary sector.