Redox reactions include :
Oxidation
Reduction
Transfer of electrons
What do you mean by redox reaction?
⟶ Redox reaction include all chemical reactions in which atoms have a change in thier oxidation number.
In general, redox reactions involve the transfer of electrons between species.
Redox ⟶Red +ox ⟶ Reduction + Oxidation
So a redox reaction is a reaction in which the some reactants undergo reduction and the others undergo oxidation.
Hence, oxidation, reduction and transfer of electrons is the answer.