For most stars in the galaxy, the Red Giant or Super Red Giant phase is ... ...

For most stars in the galaxy, the Red Giant or Super Red Giant phase is the most __________, as it precedes a massive collapse that results in the formation of a planetary nebula.
(A)    mercurial
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Sentence Equlvalence: Lesson Set

 
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For most stars in the galaxy, the Red Giant or Super Red Giant phase is ... ... 
Posted: 09/26/2015 10:30
Isn't it sounds voluminous and prodigious is exacted ? It said that a massive collapse is resultant .