Final answer:
Quote 1 contains bias through its use of loaded language and negative judgment regarding mining practices and child labor.
Step-by-step explanation:
The quote that contains bias is Quote 1: "At least 25% of it comes from illegal, unethical mining from areas of the world known for their use of child labor." This statement implies a negative judgment with the use of words like 'illegal' and 'unethical,' suggesting that the mines operate incorrectly and immorally. It also includes a loaded phrase "known for their use of child labor," which could invoke an emotional response from the reader and implies a widespread issue without providing the necessary context for understanding the situation.
In contrast, the other quotes provide factual information or actions being taken without loaded language. For example, Quote 2 discusses the active decision by certain brands to switch to synthetic mica, while Quote 3 states a fact about children working as mica laborers in India, and Quote 4 simply describes what 'mica' is in cosmetic products.