Final answer:
The correct scenario for the quality control manager checking the last 10 products is convenience sampling, where samples are chosen based on ease of access, and may not accurately represent the entire production.
Step-by-step explanation:
The correct scenario for a quality control manager who decides to check the last 10 products that came out of the production line is convenience sampling. This is because the manager is choosing the most readily available products rather than using a random or systematic method. The samples are chosen based on ease and proximity to the researcher, which may not represent the entire production accurately. Other types of sampling include simple random, stratified, systematic, and cluster sampling. For instance, if the manager had chosen random products from the production line at regular intervals, it would have been systematic sampling. If the manager had divided products into different groups based on certain characteristics and then randomly selected from those groups, it would have been stratified sampling.