Final answer:
The correct data type for describing someone's favourite way to de-stress is a string, as it would be expressed in a sequence of characters, while integer, Boolean, and list do not apply.
Step-by-step explanation:
In terms of data types, the question "What is your favourite way to de-stress?" would most closely relate to a string data type. Data types are fundamental concepts in programming that tell the computer what kind of data is being handled. In this case, a favourite way to de-stress is typically expressed in words, which would be represented as a string of characters in most programming languages.
The other options given, such as integer, Boolean, and list, do not apply to this question. An integer represents numerical values without decimals, a Boolean represents true or false values, and a list is a collection of items. Describing how someone likes to de-stress would not fall into these categories.