Which statement correctly lists the four required elements for witness competency?

• A. Personal knowledge
• B. Personal knowledge, memory, communication, and sincerity
• C. Memory
• D. Sincerity

Answer: (B)

Witness competence hinges on four requirements: the witness must have personal knowledge of the matter, have present memory of the facts, be able to communicate those facts clearly, and be able to tell the truth, typically by taking an oath or affirmation (sincerity). The option listing personal knowledge, memory, communication, and sincerity includes all four elements, so it is the best answer. The other options each cover only one essential aspect—personal knowledge alone, memory alone, or sincerity alone—missing the other required elements.