Which of the following pairs of ways can be used to solve the world's high population concentration problems i…

Analyze the question: It asks which measures can help solve the problem of high population concentration (overpopulation or overcrowding) in the world.

Concept: Population problems can be tackled in two ways:

1. Reducing the birth rate (population growth): family planning, sex education, and promoting later marriage.
2. Redistributing people: spreading industries and development so people are not all concentrated in a few areas.

Evaluate each statement:

• i. Family planning: Yes. It helps couples control the number of children they have, so it reduces population growth.
• ii. Sex education: Yes. It informs young people about reproduction and responsible behavior, which reduces unplanned pregnancies and so lowers the birth rate.
• iii. Early marriage: No. It lengthens the childbearing period and increases births, so it worsens the problem.
• iv. Industrialization: This is debatable. Industrialization concentrates people in cities, which can increase concentration unless industries are deliberately spread across regions. As stated, it is not a straightforward solution. Industrialization also lacks a clear role in reducing numbers.

Match to the options:

• A. i and ii only: both are valid measures.
• B. "only": incomplete and meaningless as written.
• C. ii and iii: early marriage is wrong.
• D. iii and iv only: early marriage is wrong.

The only option made up entirely of valid solutions is A.

Tip: In population questions, ask whether each measure lowers births or spreads people out. Anything that encourages early marriage or more children makes the problem worse. Be careful with industrialization: it only helps if industries are located away from crowded cities.