An investigation is best described as

• A. research or inquiry
• B. a casual chat about a topic
• C. a personal diary
• D. a ceremonial ritual

Answer: (A)

An investigation is a disciplined, systematic process aimed at uncovering facts, evidence, or truth about a question or problem. It involves identifying what you want to know, gathering relevant information, observing, questioning, testing ideas, and drawing conclusions based on data. This is exactly what “research or inquiry” conveys: a purposeful effort to learn something new by examining evidence and reasoning rather than guesswork.

The other options describe things that aren’t about structured discovery: a casual chat is informal talk without a purpose to gather evidence; a personal diary records private thoughts and experiences; a ceremonial ritual is a formal act with symbolic meaning rather than a methodical investigation.