Answer:
Option B - Systemic
Step-by-step explanation:
Looking at the question and the options, i can tell it is a systematic random sampling.
This is because, a systematic random sampling is a type of sampling method where samples are chosen from a larger population based on a random beginning point that has a definite and periodic interval.
We are told that a quality control manager selects every 19th refrigerator that comes off the assembly line starting with the sixth until she obtains a sample of 70 refrigerators.
This means that;
Periodic interval is Every 19th
Beginning point is every 7th
Sample size is 70
Hence, this type of sampling is a systematic random sampling.
