HDI measures health, education, and income, not material possessions like cars

Steps:

• Recall HDI formula: composite of life expectancy, education (mean/expected years of schooling), and GNI per capita indices.
• Evaluate each option against HDI components.
• Identify which change directly affects an HDI dimension.
• Select the option unrelated to any dimension.

Why B is correct:

• Car ownership reflects consumer spending but is not a factor in HDI's three dimensions (health, education, standard of living via GNI per capita).

Why the others are wrong:

• A: Directly raises the health dimension via life expectancy index.
• C: Boosts the income dimension as GDP per head correlates with GNI per capita.
• D: Increases the education dimension through mean years of schooling.

Final answer: B