Question

marla sometimes stays after school to tutor classmates. if it is tuesday, then marla tutors chemistry. if marla tutors chemistry, then she arrives home at 4 p.m. today marla arrived home at 4 p.m. what conclusion can be drawn. choose the answer that best answers the question. a) today is tuesday. b) no conclusion can be drawn. today could be thursday and marla could have arrived home at 4 p.m. due to softball practice. c) marla tutored chemistry today. d) marla only tutors chemistry, not mathematics.

Explanation:

The statements create a conditional - if Tuesday then chemistry tutoring, if chemistry tutoring then 4 p.m. arrival. Just because she arrived at 4 p.m., we can't assume she tutored chemistry (affirming the consequent fallacy), nor can we assume it's Tuesday. There could be other reasons for 4 p.m. arrival.

Answer:

B. No conclusion can be drawn. Today could be Thursday and Marla could have arrived home at 4 p.m. due to softball practice.