Answer:
Plants and Animals are the two main sources of food.
The right option is B.
Explanation:
When writing a paper, it is important to cite sources correctly to give credit to the original authors, otherwise, it would be a case of plagiarism.
Plagiarism is the use of someone else's work without giving them the proper credit. In other words, authors are protected by intellectual property rights, for which plagiarism is an unethical practice.
