Which of these items would remain unaffected by air, water or other environmental factors, when stored for a long time?

Options

A. Iron nail
B. Plastic car
C. Copper coin
D. Wooden box

Explanation

To determine which items would remain unaffected by air, water, or other environmental factors when stored for a long time, we need to consider the properties of various materials. Here is a step-by-step solution:

### Step 1: Identify the Items
List the items provided in the question. Common examples might include:
- Natural fibers (like cotton or wool)
- Synthetic fibers (like polyester or nylon)
- Metals (like iron or aluminum)
- Plastics (like polyethylene or PVC)
- Organic materials (like food items)

### Step 2: Analyze Each Item's Properties
Evaluate how each item reacts to environmental factors:
- **Natural fibers**: These can absorb moisture and may degrade over time due to exposure to air and water.
- **Synthetic fibers**: Generally, synthetic fibers are more resistant to moisture and air, but some can degrade under UV light or extreme conditions.
- **Metals**: Many metals can corrode when exposed to moisture and air (e.g., iron rusts).
- **Plastics**: Most plastics are resistant to water and air, but some can degrade over time due to UV exposure or certain chemicals.
- **Organic materials**: These typically decompose when exposed to air and moisture.

### Step 3: Determine the Most Resistant Item
From the analysis, identify which item is least likely to be affected by environmental factors. Generally, synthetic fibers and certain plastics are designed to be durable and resistant to environmental degradation.

### Step 4: Conclusion
Conclude which item would remain unaffected. For example, if the options included "nylon" and "cotton," nylon would be the better choice as it is more resistant to environmental factors.

### Final Answer
The item that would remain unaffected by air, water, or other environmental factors when stored for a long time is likely to be a synthetic fiber like nylon or a durable plastic.

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