The correct answer is A. Knowledge.
Knowledge is familiarity with facts, information, or skills acquired through experience or education. It is the state of being aware of and familiar with something.
B. Trial is a formal examination of evidence before a judge or jury to decide whether a person is guilty of a crime.
C. Witness is a person who sees an event happen and can give evidence about it in court.
D. Ignorance is the state
of being unaware or uninformed about something.Knowledge is the most common synonym for ken. It is the most accurate and precise synonym, as it captures the full meaning of the word. The other options are not as accurate or precise, as they do not capture the full meaning of the word.