I believe the answer is :Random sampling
Random sampling refers to select a group of subjects that could be used as sample for a research from a large population. The selection is beind done without any criteria in hope that the sample at least represent the general composition of the population.
Answer:
matching hypothesis
Explanation:
Matching hypothesis -
It is the theory , where the people with similar quality , behaviour or thinking tries to be together , in term of the social desirability , is known as matching hypothesis .
According to this theory , people tries to select their partner considering their taste to be as similar as possible , so they both can have same or similar thinking for life .
From this theory , people evaluate their own value and make some realistic choices by characterizing the best potential partner , to establish the similar level of attraction and comfort .
The answer is A.) Factories were dirty, hot, and poorly ventilated and work days were 12-16 hours long with a six day week.
The Civil war
Bc it was the start of something New. Everything kinda sorta changed after that