When an artery becomes blocked, in very rare cases the human body will build new healthy arteries; this process is the body's trying to compensate for the dysfunctional artery.
(A) trying to
(B) trying that it
(C) attempt to try to
(D) attempt to try and
(E) attempt to
(A) trying to
(B) trying that it
(C) attempt to try to
(D) attempt to try and
(E) attempt to



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