II. Find the following underlined word/phrase in the text. There are three definitions below each. One definition is closest to its meaning. One definition has the opposite or nearly opposite meaning. The remaining definition has a completely different meaning. Label the definitions C for closest, O for opposite, and D for different.
6 The two oil crises of 1973 and 1978 produced a situation in which energy conservation became
a top priority.
( ) a. a triviality
( ) b. an urgent matter
( ) c. a hot issue
7 Packaging is a significant fraction — between 20% and 25% by weight — of municipal solid waste, which is largely household waste.
( ) a. proportion
( ) b. whole
( ) c. process