C. both a and b
Based on my knowledge of energy conversation, Both A (Manufactures can increase a light bub's....) and B ( Energy can be conserved by turning off light when they.....) which makes you C the correct statement.
Answer:
co-parenting
Explanation: This way the parent can show the child what a stable relationship between two people who aren't together can look like.
Answer:
An explosion on the battlefield in France was heard in England.
WW1 journalists risked their lives to report on the war.
12 million letters were delivered to the frontline every week
Personally my three most interesting facts.
Explanation: