Answer
$\bf{Graph{(II)}}$
Work Step by Step
The parametric equations of a circle having radius $r$ are; $x=r \cos t ; y =r \sin t$
Here, we have $x= t \cos t , z=t \sin t , y=t$
This shows a circular spiral around the y-axis as a helix away from the xz plane with an increasing radius when $t$ decreases.
This matches with $\bf{Graph{(II)}}$.
