Question

select the correct answer option: which explanation best explains why explosives evidence is placed in unused paint cans? the paint cans are airtight and prevent evaporation of residual chemicals via submersion in oil. the paint cans are airtight and prevent evaporation of residual chemicals via submersion in water. the paint cans are made of plastic and prevent chemical reactions. the paint cans are airtight and prevent evaporation of residual chemicals.

Explanation:

To determine the correct answer, we analyze each option:

• Option 1 mentions submersion in oil, which is not a standard practice for storing explosives evidence.
• Option 2 mentions submersion in water, which is also not a typical method.
• Option 3 is incorrect as paint cans are usually metal, not plastic, and the main reason for using them is airtightness, not just preventing chemical reactions.
• The last option correctly states that paint cans are airtight, which is crucial to prevent the evaporation of residual chemicals from the explosives evidence, preserving it for analysis.

Answer:

The paint cans are airtight and prevent evaporation of residual chemicals.