Snapshot of Longitudinal Wave Axes Steps:

• Recognize the wave as longitudinal, with particle displacement parallel to horizontal propagation direction.
• Note the graph represents one instant, requiring x-axis as spatial distance along propagation.
• For y-axis, use displacement in the propagation direction (to the right) to show compression/rarefaction.
• Eliminate time-based axes, as they depict motion at a fixed point, not the wave profile.

Why A is correct:

• In longitudinal waves, a spatial snapshot graphs displacement along the direction of travel versus position, per wave equation $y = A \sin(kx - \omega t)$ at fixed t.

Why the others are wrong:

• B: Upwards displacement indicates transverse motion, perpendicular to propagation.
• C: Time on x-axis shows oscillation at one point, not the wave's spatial extent.
• D: Combines time axis (wrong for snapshot) with transverse displacement.

Final answer: A