Kieran and kurt spend most of their day performing physical labor, aligning materials, and inspecting projects for quality and safety. however, kieran has no fear of heights, while kurt works with his feet on the ground. which most likely explains the jobs of kieran and kurt?

The answer is "Kieran is a Roofer, and Kurt is a Plumber."

A plumber is a trades person who spends significant time in introducing and keeping up frameworks utilized for consumable (drinking) water, sewage and seepage in pipes frameworks.  

Roofers take a shot at houses and structures to assemble, keep up and repair rooftops. They utilize an assortment of instruments and materials to take care of business and relying upon the sort of rooftop, including black-top, electrifies steel, and shingles.  

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