Let's tackle the question in two parts. First, we will complete the sentences with suitable clauses, and then we will examine the conversation part using the words 'who,' 'which,' or 'that.'
Jaspreet did not help me because she was busy.
You will get a good result if you study hard.
She went early to bed since she was tired.
They returned home after the party ended.
I am taller than my brother.
He spoke nicely, which impressed everyone.
Now, let's look at the conversation portion:
Rinki: Didn't you want to buy a new dress?
Rini: Yes, but not from this shop. Their choice is limited, and I am not one of those people who will buy anything that comes along.
Rinki: There's another shop over there.
Rini: It looks expensive, one of those places which charge very high prices. Can afford their prices are the rich women who do not mind spending lavishly.
In the conversation, 'who' is used to refer to people, while 'which' is used for things or places. 'That' is often used to introduce essential clauses.