Answer: C. 84 donuts
Step-by-step explanation:
Given : The Bakery has 10.5 dozen donuts.
Since we know that 1 dozen contains 12 units
Then , 105. dozens of donuts= [tex]10.5\times12=126\text{ units of donuts}[/tex]
If , they sold [tex]\dfrac{2}{3}[/tex] of the donuts.
Then , the number of donuts they sold :-
[tex]\dfrac{2}{3}\times126=84[/tex]
Hence, they sold 84 donuts.