Which of the following in the rearranged in the rearranged more stable carbocation of the given species?

Which of the following is the rearranged more stable carbocation of the given species?

Which of the following is the rearranged more stable carbocation of the given species? CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C )-overset(o+)(CH)-CH_(3) rarr

Which of the following carbocations would not likely rearrange to more stable carbocation ?

Which of the following carbocations would not likely rearrange to more stable carbocation ?

Which of the following would not rearrange to a more stable form?

Which of the following would not rearrange to a more stable form?