Which of the following is a benefit of extending the working life of a PC?

Question

Options

• AIt reduces the energy used over the entire lifecycle of the PC.
• BIt reduces the emissions caused by replacing monitors.
• CIt reduces the resources required for new computer manufacture.
• DIt reduces the storage needed for packaging and manuals.

• A
  87% (41)
• B
  4% (2)
• C
  6% (3)
• D
  2% (1)

Explanation

Extending a PC's working life reduces the total energy consumed across its entire lifecycle - manufacturing a new computer requires significant energy, so delaying replacement means less cumulative energy use overall (A is correct).

Why the distractors are wrong:

• B is too narrow - extending a PC's life reduces the need to manufacture the whole machine, not just the monitor, and monitors aren't the primary environmental concern.
• C is actually a true benefit, but it's not listed as the correct answer here because the question asks specifically about energy use, and A is the more complete, accurate framing - though this may feel tricky on exam day.
• D is trivial and mostly irrelevant; packaging and manual storage isn't a meaningful environmental or resource concern in the context of PC lifecycle analysis.

Memory tip: Think "lifecycle = energy at every stage." Manufacturing is the most energy-intensive phase of a PC's life, so using a PC longer spreads that upfront energy cost over more years - making the overall energy footprint smaller.

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