Which of these options can result from microbial growth in a jet fuel tank?

Microbial growth in a jet fuel tank can lead to significant operational issues, particularly affecting the aircraft's performance and safety. The correct answer highlights that engine seizure and corrosive action are direct consequences of such growth.

When microbes proliferate in jet fuel, they can form biofilms and sludge that disrupt the fuel's chemical composition. This buildup can obstruct the fuel flow, leading to insufficient fuel reaching the engine. If fuel flow is disrupted severely enough, it can cause the engine to seize, resulting in a potential in-flight emergency.

Additionally, the microbial action can produce acids as metabolic byproducts. These acids can corrode system components, especially in environments where materials like metals or rubber are present. Over time, this corrosion can compromise the integrity of rubber tanks and fuel system components, leading to leaks or failures.

While other options mention specific issues like fuel flow interference and corrosion, the selected answer encapsulates the most severe outcomes—engine seizure and the resultant corrosive action, demonstrating the seriousness of microbial growth in fuel systems. This understanding is crucial for maintenance and operational protocols to ensure the safety and efficiency of aircraft operations.