Among the gases (a)-(e) the gases that cause greenhouse eFIGUREFIGUREect are:

Options

A. a, b,c and (e)
B. a and d
C. a,b,c and d
D. a,c,d and e

Answer

To determine which gases among the given options (A)-(E) contribute to the greenhouse effect, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Greenhouse Gases**:
- The primary greenhouse gases include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), water vapor (H2O), ozone (O3), and chlorofluorocarbons (CFCs).

2. **Analyze Each Gas**:
- **Gas A**: CO2 (Carbon Dioxide)
- This is a well-known greenhouse gas that contributes significantly to the greenhouse effect.
- **Gas B**: H2O (Water Vapor)
- Water vapor is also a greenhouse gas and plays a crucial role in the greenhouse effect.
- **Gas C**: CFCs (Chlorofluorocarbons)
- CFCs are synthetic compounds that are potent greenhouse gases.
- **Gas D**: O2 (Oxygen)
- Oxygen is not a greenhouse gas; it does not absorb infrared radiation significantly.
- **Gas E**: O3 (Ozone)
- Ozone is considered a greenhouse gas, especially in the troposphere where it can trap heat.

3. **Compile the Results**:
- From the analysis:
- Gas A (CO2): Greenhouse gas
- Gas B (H2O): Greenhouse gas
- Gas C (CFCs): Greenhouse gas
- Gas D (O2): Not a greenhouse gas
- Gas E (O3): Greenhouse gas

4. **Final Answer**:
- The gases that cause the greenhouse effect among the options are A (CO2), B (H2O), C (CFCs), and E (O3).

### Conclusion:
The gases that contribute to the greenhouse effect from the given options are A, B, C, and E.

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