The second one should be the answer
all "atomic" or constituent statements are true
at least one "atomic" or constituent statement is true
Answer:
C) At most one sample is mutated
Step-by-step explanation:
If there are 15 samples, it means that 15 is the total (100%) of samples. Then, if we know that there is a chance that 3% are mutated, then we calculate the 3% of 15:

This means that at most one sample is mutated, as this result is not zero (we discard answer A), and 0.45 is not more than half of the samples.
1/8 is rational because irrational numbers can be written as decimals but not fractions