Final answer:
Joachim should decrease his saturated fat intake to meet the guidelines, which recommend consuming less than 10% of daily calories from saturated fats.
Step-by-step explanation:
The question asks whether Joachim should increase, maintain, decrease, or eliminate his saturated fat intake based on the 2015-2020 Dietary Guidelines for Americans. According to these guidelines, individuals are advised to consume less than 10 percent of calories per day from saturated fats. Given that Joachim consumes about 15% of his total daily calories as saturated fat, he would need to decrease his saturated fat intake to align with the dietary recommendations.