31. Your first step in response to a gas turbine engine high lube oil sump temperature alarm would be which of the following?

Reducing engine speed is the correct initial response to a high lube oil sump temperature alarm because it immediately reduces load and heat generation, mitigating potential damage while allowing for further assessment. Prioritizing load reduction aligns with standard casualty control practices and protects the engine and gear before diagnostic actions are taken; de-coupling is a more drastic measure reserved for severe situations.