Answer: The correct answer is: " 4c ".
___________
Explanation:
" 4c * d ÷ d " = " (4c*d) /d " ;
= " (4cd) /d " ; The "d's" cancel out to "1" ; since "d ÷ d = 1 " ;
and we are left with: " 4c " .___________Hope this helps!
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