The correct answer is: C. Lead
Newspaper is made from wood pulp, which contains lead. When food is wrapped in newspaper, the lead can leach into the food and contaminate it. Lead is a toxic metal that can cause a variety of health problems, including brain damage, seizures, and death.
Magnesium, aluminum, and copper are also metals that can be found in newspaper. However, these metals are not as toxic as lead and are not likely to cause health problems if they are consumed in small amounts.
In addition to lead, newspaper can also contain other contaminants, such as ink and pesticides. These contaminants can also leach into food and cause health problems.
For these reasons, it is not recommended to wrap food in newspaper. If you must wrap food in paper, use a type of paper that is specifically designed for food contact, such as parchment paper or wax paper.