Step 1: Recall the properties of the four fundamental forces.& nbsp;
The four fundamental forces are:
Among these,
\[ \boxed{\text{Electromagnetic force is a long-range force.}} \]
Hence, it can act over very large distances.
Step 2: Check the remaining options.
• Electromagnetic force does not require any material medium. It can propagate through a vacuum.
• Strong nuclear force is mainly an attractive force that binds protons and neutrons inside the nucleus.
• Strong nuclear force is effective only over distances of the order of
\[ 10^{-15}\,\text{m}, \]
so it is a short-range force.
Therefore, the only correct statement is
\[ \boxed{\text{Electromagnetic force acts over large distances.}} \]
Hence, the correct option is \[ \boxed{(A)}. \]