How can you deter theft?

Answer: B — Get the number plate etched in the windows

Installing an alarm system (option A) and using a steering wheel lock (option C) can both help deter theft to some extent, but they are not foolproof methods. An alarm system may be disabled by thieves or ignored by bystanders, and a steering wheel lock can be removed or broken. The best answer is to get the number plate etched in the windows (option B). This makes the car less appealing to potential thieves and can help authorities identify and recover a stolen vehicle. Using all of the above methods (option D) may provide additional layers of security, but it is not necessary to use all three methods in order to effectively deter theft. Therefore, option B is the most practical and effective solution.