Which of the following group has the maximum hyperconjugation effect ?

Which of the following group has maximum hyper conjugation effect but minimum inductive effect

Which of the following group has maximum hyper conjugation effect but minimum inductive effect

Which of the following alkyl groups exerts maximum hyperconjugation when bonded to an unsaturarted system?

Which of the following represents the hyperconjugation effect ?

Which of the following has maximum -I effect?

Which of the following has maximum -I effect?