Any practices that supports continuity is termed as sustainable such as personal hygiene which enables to curb the ;persistence of infectious diseases. Ordinarily, practicing personal hygiene is sustainable and would greatly reduce infectious diseases globally especially endemic areas.

Explanation:

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In a multicellular organism, organs carry out a variety of life functions. In a single-celled organism, these functions are perf

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The correct option is B.
A multi cellular organisms has many cells which carry out various function and which are organised into tissues, organs and organ system. A unicellular organism on the other hand has only one cell with different cell organelles. Thus, in unicellular organisms, it is the cell organelles that carry out different functions. <span />

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