Final answer:
Butter and coconut oil are high in saturated fatty acids.
Step-by-step explanation:
Fatty acids can be classified as saturated or unsaturated. Saturated fats contain a high proportion of saturated fatty acids, which are solid at room temperature. Butter is high in saturated fatty acids and is solid at room temperature, making it a high source of saturated fat. Coconut oil is also high in saturated fat and is solid at room temperature. Therefore, options b (Butter) and a (Coconut oil) are high in saturated fatty acids.