When the cotton cover of a fire hose becomes oily or greasy, it should be washed with a solution of mild soapy freshwater and __________.

Correct Answer: Option A — a soft-bristled brush

Washing oily or greasy fire hose cotton jackets requires mild soapy freshwater and a soft-bristled brush to remove hydrocarbon contaminants without abrading or destroying the woven natural fibers, preserving structural integrity and burst strength.