In his definition of 'Law of Tort', Winfield supports the principle given in the maxim:

Answer: Option B

In his definition of the 'Law of Tort', Winfield supports the principle given in the maxim 'Ubi jus ibi remedium', which translates to 'Where there is a right, there is a remedy'. This principle underscores the idea that when a person's legal rights are violated or infringed upon, there should be a corresponding legal remedy available to provide relief or compensation for the harm suffered.

Option A: Ubi remedium ibi jus is not the correct answer. The correct maxim is 'Ubi jus ibi remedium'.

Option C: Respondeat superior refers to the legal doctrine of vicarious liability where an employer is held liable for the actions of their employees in certain circumstances.

Option D: Damnum sine injuria is a different legal principle referring to harm suffered without a legal injury or infringement of a right.

Given the options provided, the correct answer is Option B: Ubi jus ibi remedium.