ISSA Nutritionist Practice Exam 2025 - Complete Preparation Guide

A food product claiming to be 'all-natural' indicates that it should contain no synthetic ingredients. This label suggests that the components used in the product come from natural sources without undergoing chemical processes or alterations that would classify them as synthetic. This means that while the product might contain some processed ingredients, those ingredients should ideally be derived from natural sources and not be artificially manufactured.

In contrast to the other options, while being certified organic would certainly align with the concept of 'all-natural,' it is not a requirement for that designation. Additionally, there could be varying interpretations of what qualifies as a 'preservative,' leaving some ambiguity regarding option B. Option C allows for the inclusion of artificial colors, which contradicts the intent of being 'all-natural' because such colors are synthetic. Hence, the essential characteristic of being 'all-natural' revolves around the absence of synthetic ingredients, solidifying the validity of this conclusion.