What is a limitation of the two hole fighting position?

The two-hole fighting position has several inherent characteristics that can restrict its effectiveness during combat operations. The limitation related to the traverse of the gun is particularly significant. In a two-hole position, the layout usually provides minimal space for the machine gunner to pivot or adjust the direction of fire without exposing themselves or the assistant gunner to enemy sightlines. This constriction can severely affect their ability to engage moving targets or adapt to changing tactical situations, which is crucial in a dynamic firefight.

In contrast, the other options present varying degrees of challenges faced by crew members in such a position but do not specifically highlight the issue of traverse. Limited cover from indirect fire deals more with the overall security and protection aspects rather than the firing capabilities. Inadequate space for crew members may influence comfort or efficiency but does not directly correlate to the gun's maneuverability. Similarly, while the inability to switch sectors of fire is a point of concern, it relates more to how the position is set up rather than the immediate failure of the gun to traverse effectively while under fire. Thus, choosing the constraint of gun traversal accurately reflects a core tactical limitation of the two-hole fighting position.