Ozonolysis of $2$-methylbut-$2$-ene yields

Which of the following is most reactive towards $EAR$ (Electrophilic Addition Reaction)?

The energy profile diagram for the dehydration of $2-$butanol using concentrated $H_2SO_4$ is given below. The product $(b)$ of the above reaction is:

Identify the reactions $X$,$Y$,and $Z$ respectively for the conversion of vinylcyclohexane as shown in the figure.

When $CH_2=CH-COOH$ is reduced with $LiAlH_4$,the compound obtained will be:

The major product in the reaction is