answers with explanations please

16. Which hydrogen atom (proton) is preferentially abstracted in the following reaction? 17. Predict the product of the reaction shown below. a. d. e. none of these answers 18. Predict the product of the reaction shown below. a. b. d. e. None of these answers 19. Predict the product of the reaction shown below. (a) (b) (c) (d) (e) none of these answers