The car, _________handbrake wasn’t very reliable, began to slide backwards. Options : whose who whom all of these

Break Down the Problem

1. Identify the function of the word needed in the blank.
2. Analyze each option for grammatical correctness.

Relevant Concepts

• Whose: A possessive pronoun used to indicate ownership.
• Who: A subject pronoun used to refer to people.
• Whom: An object pronoun used to refer to people in formal contexts.

Analysis and Detail

1. In the sentence, the blank describes the relationship between the car and its handbrake. The phrase can be rephrased as "the handbrake of the car," indicating possession.
2. Therefore, the appropriate word to use is "whose" because it shows that the handbrake belongs to the car.

Verify and Summarize

• "Who" and "whom" would not fit contextually since they do not convey possession.
• Only "whose" makes sense in this context and correctly modifies "handbrake."

Final Answer

The correct option is whose.