What should be checked for proper alignment in a trunk assembly?

In the context of ensuring proper alignment in a trunk assembly, examining the trunk latch and striker is critical. The latch and striker are essential components for securing the trunk lid. If the latch does not align properly with the striker, it can result in the trunk not closing securely, leading to possible issues such as rattling or even being unable to close the trunk completely. This alignment directly impacts vehicle functionality and safety because a well-aligned trunk assembly ensures that the trunk lid remains closed while driving, which is vital for both aerodynamics and security.

While other components, such as the weather strip and lid, and the quarter panel and rear body panel, are also important for the overall fit and aesthetic of the vehicle, they do not directly serve the crucial function of securing the trunk. Similarly, the alignment of the sail panel and trunk lid, while it may affect the overall appearance and body integrity, is less critical for the specific function of the trunk assembly's operational integrity. Thus, checking the latch and striker for proper alignment is paramount for ensuring that the trunk operates as intended.