Which of the following variables cannot be expressed in quantitative terms?

The correct answer is B. Marital status.

Socio-economic status, numerical aptitude, and professional attitude can all be expressed in quantitative terms. Socio-economic status can be measured by income, education, and occupation. Numerical aptitude can be measured by tests such as the SAT or GRE. Professional attitude can be measured by surveys or interviews.

Marital status, on the other hand, is a qualitative variable. It cannot be measured on a scale or ranked. A person is either married, single, divorced, or widowed. There is no in-between.

Here is a brief explanation of each option:

• Socio-economic status is a person’s social and economic position in society. It is often measured by income, education, and occupation.
• Numerical aptitude is a person’s ability to understand and manipulate numbers. It is often measured by tests such as the SAT or GRE.
• Professional attitude is a person’s attitude towards their work. It is often measured by surveys or interviews.
• Marital status is a person’s marital condition. It is often categorized as married, single, divorced, or widowed.