Final answer:
Critical thinking is the subject of this question, and it involves examining assumptions, appraising sources, evaluating evidence, and assessing conclusions. Correct option is a.
Step-by-step explanation:
Critical thinking is the subject of this question. It refers to the ability to examine assumptions, appraise sources, discern hidden biases, evaluate evidence, and assess conclusions. Critical thinking involves looking beneath the surface of words and images to analyze, interpret, and evaluate. It is a skill that allows individuals to make informed judgments based on logical reasoning and evidence.