Hi I just want to ask the right answer for this with explanation please. I hope that you can help me

16. Which of the following illustrates modus ponens? (c) [Ip=qaq = p (d) [(pvq)-p]-q 17. Which of the following is a tautology? (a) PATE (b) pump (d) -pep) 18. When p and q are both true propositions while " is false, which of the following has truth value of false? (a) pvqur (b) pvqv-r (c) (poglar (d) areapag) 19. Which of the following is NOT a proposition? (a) x+5 8 (b) What I am saying is true. (c) The number o is even. (d) DLS-CSB follows a trimestral calendar, 20. Which of the following is the symbol for a conjunction? (A) V (b) e (d) = 21. Consider the premises, P: All athletes practice. 4: If one practices, then s/he becomes strong. ": Peter is an athlete. Which of the following is a valid conclusion from these premises? (a) Peter practices. (b) Peter is strong (c) Peter practices and is strong. (d) ALL of the given statements are valid. . Which of the following illustrates modus tollens? (a) [(pollq r]](per) (b) [Ipaqlap]=q (c) (p-gla-qlap (d) [(pval-p]=q 23. A conditional statement is false only when the antecedent is (a) true and the consequent is false. (b) false and the consequent is false. (c) true and the consequent is true. (d) false and the consequent is true