This question tests your understanding of conditional sentences and passive voice in English grammar.

Step 1: Analyze the sentence structure
The sentence begins with "If you're not careful in the crowd," which is a conditional clause indicating a possible future situation.

Step 2: Identify the appropriate verb tense
In conditional sentences (Type 1 real condition), we use:
- If-clause: present tense
- Main clause: future tense (will + base verb)
Since the if-clause is already in present tense ("you're"), the main clause should be in future tense.

Step 3: Determine active vs passive voice
The second blank requires understanding whether the money is actively doing something or having something done to it. Money doesn't steal; it gets stolen by someone. Therefore, we need the passive voice construction "get stolen" where "stolen" is the past participle.

Step 4: Combine both elements
The correct construction is: "will get" (future tense) + "stolen" (past participle for passive voice).

Final Answer: The correct option is "will get / stolen"

Related Concepts:

Conditional Sentences: Used to express situations and their consequences. Type 1 conditionals describe real and possible situations in the future.

Passive Voice: Used when the subject receives the action rather than performs it. Structure: be/get + past participle.

Important Formula:
Conditional Type 1: If + present tense, will + base verb
Passive Voice: Subject + be/get + past participle + (by agent)