Which of the following describes the coverage offered by a unionall garment?

The reason full coverage from the chest down to feet is the correct description of a unionall garment is that this type of clothing is designed to provide comprehensive protection. Unionalls generally feature a one-piece design, which includes a top that covers the chest and extends down to the legs, similar to overalls but combined with a full upper section akin to a jumpsuit. Such garments are particularly useful in industries requiring durable and versatile workwear, as they keep the wearer covered and protected from various elements, dirt, or potential hazards while still allowing for ease of movement.

The other options do not accurately reflect the design and purpose of unionalls, as they either imply limited coverage or focus only on specific parts of the body rather than the complete protective functionality that unionalls are meant to offer.