A "pollution-free" energy source (line 27) means an energy source that is free of pollution. Check the option in which the phrase is also correctly explained.
- A. Energy-saving fuels = fuels saved by energy
- B. A ten-page sales contract = a sales contract that has ten pages
- C. A hard-working manager = a manager who is hard to work with.
- D. Environment-protecting initiatives = protection of environment initiatives.
- E. Speed-control systems = control of speedy systems