Concept:
Parallel lines never meet and are commonly associated with balance, harmony, continuity, and the suggestion of endless extension. They do not converge or intersect and are not specifically related to the outline of the human body.
Step 1: Examine each statement.
\[
\begin{aligned}
A. &\ \text{Correct. Parallel lines imply continuity and endless extension.}
B. &\ \text{Correct. They create a balanced and harmonious visual effect.}
C. &\ \text{Incorrect. The human body is more closely associated with curved and organic lines.}
D. &\ \text{Correct. Parallel lines suggest continuous movement and direction.}
E. &\ \text{Incorrect. Parallel lines neither converge nor intersect.}
\end{aligned}
\]
Step 2: Identify the correct statements.
The correct statements are
\[
\boxed{A,\ B,\ \text{and}\ D}
\]
Hence,
\[
\boxed{\text{(A)}}
\]