environmental education / help / spread / environmental awareness / share practical techniques / solve the environmental problems.

• A. 
  Environmental education to help for spreading environmental awareness and sharing- practical techniques to solve the environmental problems.
• B. 
  Because environmental education helps to spread environmental awareness and shares practical techniques to solve the environmental problems.
• C. 
  Environmental education helps to spread environmental awareness and shares practical techniques to solve the environmental problems.
• D. 
  Environmental education that helps to spread environmental awareness and sharing practical techniques to solve the environmental problems.