Efficacy means “capacity for producing a desired result or effect” so i believe the answer would be D.
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How do you write a poem, because the others can be answered with a simple yes or no
Answer:
1. Kesha/Proper 2.Teacher's/singular Possesive 3.Ryan's/ singular Possesive 4.crow/common 5. Flowers/ plural possesive
Explanation:
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