Final answer:
The true statement among the options given is that cream and butter are solid fats, as they contain saturated fats that are solid at room temperature. Other statements are incorrect because meats can vary in fat content, not all dairy products are pure sources of saturated fat, and grain products can contain solid fats.
Step-by-step explanation:
To address the student's question regarding which statement is true, we must analyze each option based on our understanding of nutrition, particularly focusing on protein, fat, and their respective sources. The correct statement is that cream and butter are solid fats.
This is true because saturated fats, like those found in cream and butter, tend to be solid at room temperature. The other statements are imprecise or incorrect:
- Not all meats are higher in protein than in fat; some cuts of meat can be quite fatty.
- While many dairy products do contain saturated fats, not all dairy products are exclusively sources of saturated fat, as there are also low-fat and fat-free options available.
- Grain products can contain added solid fats, so they aren't necessarily solid fat-free.
It's important to understand the differences between saturated and unsaturated fats. Saturated fats, mainly found in animal products, should be consumed in moderation due to their potential health risks, such as an increased likelihood of heart disease from elevated LDL cholesterol levels. In contrast, unsaturated fats, primarily from plants and fish, are considered healthier and should make up most of the fats in a well-balanced diet.