Which of the following is correct with respect to $-I$ effect of the substituents? ($R =$ alkyl)

Identify the compound which has the maximum number of no-bond resonance (hyperconjugation) structures.

State True or False for the following statements:
$(i)$ The stability is explained by resonance effect and hyperconjugation.
$(ii)$ The resonance structures are drawn in resonance and hyperconjugation.
$(iii)$ Hyperconjugation is a bondless resonance.
$(iv)$ In resonance structure,there is movement of electron pair of only $\pi$ bond.

Formic acid is a stronger acid than acetic acid. This can be explained using

The higher stabilities of $tert$-butyl cation over isopropyl cation and $trans-2-butene$ over propene,respectively,are due to orbital interactions involving

Given below are two statements:
Statement $I:$ Hyperconjugation is a permanent effect.
Statement $II:$ Hyperconjugation in ethyl cation $(CH_{3}CH_{2}^{+})$ involves the overlapping of $C_{sp^{3}}-H_{1s}$ bond with the empty $2p$ orbital of the adjacent carbon.
Choose the correct option: