I believe the answer would be A!
Hope this helps!! :)
~M
Answer:
one who ... / a person who ... / someone who ....
Explanation:
performer = a person who performs
teacher = a person who teaches
painter = a person who paints
singer ....
dancer ....
It’s a chemical Rxn …
copper sulfate + sodium hydroxide → copper hydroxide + sodium sulfate
CuSO4+ 2NaOH → Cu(OH)2+ Na2SO4