Ans is option (C)
Area of the circular garden including the $3$ ft. wide path $=$ $\pi\times(10+3)^{2}=169\pi$ square ft.
Area of the circular garden without the path = $\pi\times 10^{2}=100\pi$ square ft.
$\therefore$ Area of the $3$ ft. wide path = $169\pi-100\pi$ square ft. = $69\pi$ square ft