Yes — maybe the dot product is large when the angle is close to zero and small when the angle is close to perpendicular.

The answer is correct, but a little vague.
Let us tighten it up.
For now, think about 2D vectors.
Consider vector **a** in the diagram and
its dot product with two other vectors, **b** oriented at 30°,
and **c** oriented at 60°.

Which do you think is larger:

**a · b**, or**a · c**?