Which of the following is NOT considered a "free from" defect of cantaloupe?

The correct choice, sponginess, is not considered a "free from" defect of cantaloupe because it relates to the texture and overall quality of the fruit rather than an external visual defect. The term "free from" typically pertains to visible issues that can readily be identified during inspection, affecting the marketability or consumer acceptance of the cantaloupe.

Bruising, water spots, and sunburn are all external defects that can detract from the appearance and appeal of the cantaloupe. Bruising indicates physical damage, while water spots and sunburn are specific issues visible on the skin of the fruit that can signal poorer quality or handling issues. Sponginess, on the other hand, is more of an internal issue that consumers may only notice when they cut into the fruit, thus influencing the eating quality but not the appearance that qualifies it for sale.