B I think as you can write and create a study book on the computer.
Answer:
When toxic chemicals used for pest control or for cleaning and sanitizing food contact surfaces and food preparation equipment come into contact with food, the food may be contaminated by those chemicals. Toxic metals such as copper, brass, cadmium, lead and zinc can be a source of chemical contamination.
Explanation:
A. He followed tips and earned money in the stock market.
<span>D. difficult delivery
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