Answer:
B. Doubled
Step-by-step explanation:
The formula to find the circumference of the circle is
[tex]C=2\pi r[/tex]
Now our problem says that the radius is doubled. Hence the new radius is 2r
Hence the new circumference will be
[tex]C'=2 \pi 2r[/tex]
[tex]= 2 \times 2\pi r[/tex]
[tex]=2C[/tex]
Hence our circumference gets doubled.