What does ascertain mean?

• A. To know
• B. To guess
• C. To get
• D. To deny

Answer: (C)

Ascertain means to determine or discover something with certainty by careful checking or investigation. It’s about confirming facts so you can be sure of the truth. In practice, you ascertain a detail by verifying information from reliable sources and drawing a definite conclusion. That’s why “to know” fits best here: ascertain is about arriving at a confirmed understanding. The other options miss that sense: guessing isn’t supported by evidence, getting is about obtaining something rather than confirming a fact, and denying is the opposite of establishing the fact.