This is the 74th most frequent Arabic word.
وذلك
"And that" or "and such."
In this context, 'وذلك' is used to link a personal preference with its underlying motivation or rationale.
أحب القراءة، وذلك لأنها توسع آفاقي.
I love reading because it broadens my horizons.
Here, 'وذلك' emphasizes the purpose of performing activities, clarifying its intention.
يقوم الطلاب بحل التمارين، وذلك للحصول على تدريب أفضل.
The students solve exercises for better practice.
Here, 'وذلك' connects the act of going to the market with the specific reason for it, creating a causal explanation.