Answer:
The given curve c(t) is a is a flow line of given velocity vector field F(x, y, z).
Step-by-step explanation:
We are given the following information in the question:

Now, we evaluate the following:

Now, we have to evaluate:

When F(c(t)) = c'(t), then c(t) is a flow line of given velocity vector field F(x, y, z).
Since,
, we can say that c(t) is a flow line of given velocity vector field F(x, y, z).