Select the option that correctly replaces the underlined segment in the given sentence.

You must stop your sister to perform such reckless deeds.

The correct answer is: from performing such reckless deeds

Explanation and Grammatical Rule:

1. Verb Collocation / Prepositional Rule:
The verb "stop" when used in the sense of preventing someone from doing something follows a specific grammatical pattern:

stop + [object] + from + [verb-ing (gerund)]

Although "from" can sometimes be omitted in informal English, the preposition "from" followed by a gerund is the standard, grammatically complete form required in formal contexts and standard testing.

2. Analysis of the Original Sentence:
The original sentence uses an infinitive: "You must stop your sister to perform such reckless deeds."
Using "to perform" changes the meaning to suggest that the purpose of stopping your sister is so that she can perform reckless deeds, which contradicts the intended meaning of preventing her from doing them.

3. Evaluating the Options:
• "from performing such reckless deeds": Correctly uses the preposition "from" followed by the gerund "performing".
• "not to perform such reckless deeds": Incorrect infinitive structure.
• "of performing such reckless deeds": Incorrect preposition; "stop" does not pair with "of".
• "performing such reckless deeds": Lacks the standard preposition "from".

Therefore, replacing the underlined segment with "from performing such reckless deeds" makes the sentence grammatically accurate and clear.