Answer
The curve is an Helix winding around the \(y\)-axis.
Work Step by Step
\[
x(t) = \sin (\pi t) \\
z(t) = \cos(\pi t)
\]
Describe a circle oriented on the \(xy\)-plane. When we set \(y(t) = t\) it becomes an Helix that goes towards the \(y\)-axis.
