Multiple choice softskills leadership invalid one incapacitated(disabled) by a chronic illness slavish openmouthed brilliant Reveal answer Fill a bubble to check yourself A Correct answer Explanation As a noun, 'invalid' refers to a person who is incapacitated or disabled by chronic illness or infirmity. Option A correctly provides this definition. Options B, C, and D describe slavish behavior, openmouthed state, and brilliance respectively.