The extent to which a test measures what it purports to measure is called _________.

Test/question paper works as a tool in order to measure students' level of knowledge. It also helps to adjust the learning material accordingly. Validity, reliability, and objectivity are the characteristic of tests.

Key Points

The above-mentioned statement is related to the test's validity as:

• A measuring instrument possesses validity when it actually measures what it claims to measure.
• For example, if a test is designed to measure aptitude, then it must measure aptitude and not personality, intelligence, or any other traits.
• Validity generally refers to how accurately a conclusion, measurement, or concept corresponds to what is being tested.
• It is defined as the extent to which an assessment accurately measures what it is intended to measure.

Hence, it could be concluded that the correct answer is validity.

Additional Information 

Other qualities of a test:

Reliability:

• One of the most important criteria for the quality of measurement is the reliability of the measuring instrument.
• Reliability means consistency with which an instrument yields similar results.

Objectivity

• Objectivity is also referred to as rater reliability. It affects both the validity and reliability of test scores. 
• The objectivity of a measuring instrument means the degree to which different persons scoring the answer receipt arrives at the same result.