The main purpose of sanctions is i) Prevention ii) Deterrence iii) Politics iv) Punishment. i)ii) & iii)i), ii), iv)i), ii), iii),i), ii), iii) & iv)

The main purpose of sanctions is i) Prevention, ii) Deterrence, and iv) Punishment. Sanctions are measures taken by countries or international organizations to bring about a change in behavior in a country or individual. They are often used as a tool of foreign policy.

i) Prevention: Sanctions can be used to prevent a country or individual from engaging in certain activities that are deemed harmful or against international law. For example, sanctions may be imposed to prevent a country from developing nuclear weapons.

ii) Deterrence: Sanctions can also serve as a deterrent by discouraging a country or individual from engaging in undesirable behavior. The threat of sanctions can deter a country from invading another country, for example.

iv) Punishment: Sanctions can be used to punish a country or individual for their actions. For example, if a country is found to be supporting terrorism, sanctions may be imposed as a form of punishment.

iii) Politics: While politics can often play a role in the decision to impose sanctions, it is not a main purpose of sanctions. Rather, it is a factor that can influence the decision-making process. Therefore, the correct answer is i), ii), and iv).