A scientific explanation for a set of observations that can be tested and is written with an "if/then" statement is referred to as hypothesis and is denoted as option B.
This is defined as the proposed explanation for a particular phenomenon before several experiments are conducted by others in different parts of the world to confirm its authenticity.
It employs the use of words such as "if/then" which shows its unproven status which is therefore the reason why it was chosen as the most appropriate choice.
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