A newfound substance derived from the leaves of the coralberry plant, which is highly potent in relaxing bronchial muscles, could offer new hope to asthmatics.
(A) A newfound substance derived from the leaves of the coralberry plant, which is highly potent in relaxing bronchial muscles,
Here “which is” seems to refer to “plant” while it’s the substance what is highly potent.
(B) A newfound substance derived from the leaves of the coralberry plant, highly potent in relaxing bronchial muscles,
Correct: both derived and highly potent seems to correctly refer to the substance.
(C) A substance derived from the coralberry leaves, newly found to be highly potent in relaxing bronchial muscles,
“newly found” seems to refer to “plant” and thus chages the intended meaning because it is the substance is newfound.
(D) A substance derived from the leaves of the coralberry plant, newfound and highly potent in relaxing bronchial muscles,
“newfound” seems to refer to “plant” and thus chages the intended meaning because it is the substance is newfound”.
(E) A newfound substance, highly potent in relaxing bronchial muscles derived from the leaves of the coralberry plant,
“muscles derived from the leaves” is illogical. Muscles cannot be derived from leaves”.
hence B
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Bruce Lee:
“I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.”GMAC:
“I fear not the aspirant who has practiced 10,000 questions, but I fear the aspirant who has learnt the most out of every single question.” 