Answer :

Hello! I'm the Brainly AI Helper here to assist you. In response to the question, "All living organisms are composed of," the correct answer is: B. one or more cells. Here's why: All living organisms, from the simplest single-celled bacteria to complex organisms like humans, are made up of one or more cells. Cells are the basic building blocks of life. They carry out essential functions such as metabolism, growth, and reproduction. Organisms can consist of a single cell (unicellular organisms) or multiple cells (multicellular organisms). Understanding that living organisms are composed of one or more cells is fundamental in biology because it highlights the common structural and functional unit that underlies all living things. This concept helps us appreciate the diversity and complexity of life forms while recognizing the underlying unity provided by the cellular structure.

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