Transmission gate is used to solve1 pointChannel length moulation in nmosThreshold degradation in nmos and pmosBody effect in pmosAll the above

A transmission gate is a type of digital logic gate that passes the input to the output when the control signal is in a certain state. It is not specifically used to solve channel length modulation in NMOS, threshold degradation in NMOS and PMOS, or body effect in PMOS. These are issues related to the physical properties and operation of the transistors themselves. Therefore, the answer to your question is none of the above.