Answer:
c) Poisson distribution.
Explanation:
The Poisson distribution is a distribution that we can use when we need to know how many times an specific event takes place in a fixed amount of time or space.
In this case, the manufacturer is interested in the number of flaws that occur in a fixed amount of material (in this case 100 feet), therefore, the most adequate probability distribution that he should apply to this situation would be the Poisson distribution.