Which of the following is most likely to unde | vedclass

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(A) hydride shift is favorable when it leads to a more stable carbocation (e.g.,from primary to secondary,or secondary to tertiary). In the given opti

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(A) hydride shift is favorable when it leads to a more stable carbocation (e.g.,from primary to secondary,or secondary to tertiary). In the given options,the structure in $A$ represents a $1^{\circ}$ carbocation adjacent to a $3^{\circ}$ carbon atom. $A$ $1,2$-hydride shift from the $3^{\circ}$ carbon to the $1^{\circ}$ carbocation will result in a more stable $3^{\circ}$ carbocation. This is a highly favorable rearrangement because it increases the stability of the intermediate significantly.

Which of the following is most likely to undergo a favorable hydride shift?

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