What happened to the speaker’s appetite when they saw the horrible food?

The correct answer reflects a direct cause-and-effect relationship between the speaker's emotional reaction to the horrible food and their appetite. When the speaker encounters food that is deemed unattractive or unpalatable, it can trigger an immediate response leading to a loss of appetite. This reaction is common, as visual stimuli significantly influence our senses, particularly in relation to food. The sight of something unpleasant can instantly repel an individual, resulting in a sudden disinterest or aversion to eating.

The other options do not align with this immediate reaction. For instance, an improvement in appetite immediately after seeing unappetizing food is counterintuitive, as is the idea that appetite would remain unchanged or decrease gradually when faced with something distasteful. Such scenarios do not accurately capture the typical human response to encountering food that is visually unappealing or repulsive.