The correct answer is Match objectives to items because test validity depends entirely on how well an assessment measures its intended learning outcomes.
Curriculum Alignment: To establish high content validity, every question on an assessment must directly correspond to a specific educational goal or behavioral objective taught during instruction.
Measuring the Target: Aligning items with objectives ensures that the test truly measures the intended knowledge profile rather than drifting into accidental variables or unfair tasks.
Incorrect Options:
Make test longer is incorrect because increasing the number of questions typically improves a test's reliability (consistency of scores) rather than its validity.
Add more options is incorrect because modifying the number of multiple-choice distractors alters guessing probabilities but does not align the test contents with the actual curriculum.
Increase difficulty is incorrect because making questions harder without a pedagogical reason introduces bias and lowers validity by testing concepts beyond the course objectives.