Why is it important to perform weight and balance calculations before flight?

Performing weight and balance calculations before flight is crucial for several reasons, primarily related to safety and regulatory compliance. Ensuring that an aircraft is within its weight and center of gravity limits is fundamental to maintaining proper flight characteristics. If an aircraft is overloaded or improperly balanced, it can lead to impaired performance, difficulties in maneuverability, and potential structural failure. Additionally, complying with legal requirements is essential; operating an aircraft outside of its specified weight and balance limits can result in legal penalties and safety violations.

The other options do not address the critical safety aspects associated with weight and balance calculations effectively. While passenger enjoyment, pilot comfort, and engine performance may be factors considered later, they do not directly reflect the necessity of ensuring the aircraft operates within safe and regulated parameters.