Step 1: Idea:
We will answer by reading the sentence that mentions the attar of roses and then testing each person against it, one by one.
Step 2: Find the sentence:
The last sentence of the passage talks about the attar of roses being a popular perfume. It ends by saying who is given credit for finding it.
Step 3: Read who gets the credit:
The credit goes to the mother of Nurjehan. The passage uses the word 'attributed', which means credited by tradition.
Step 4: Test the tempting wrong answer:
Option 4, Nurjehan herself, looks natural because she was the famous empress. But the passage separates her from the discoverer, so this option fails.
Step 5: Test the remaining options:
A father or a sister of Nurjehan is not mentioned anywhere in the passage, so Options 1 and 3 have no support at all.
Final Answer:
Only the mother of Nurjehan matches the passage, so the answer is Option 2. \[ \boxed{\text{Mother of Nurjehan}} \]