Answer:
I am pretty sure the answer is C. all of these answers are correct
If i am incorrect then i apologize
Hope this help and have a great day :))))
Answer:
work in hard labors and farms, used as servants and house cleaners. Many slaves living in cities worked as domestics, but others worked as blacksmiths, carpenters, shoemakers, bakers, or other tradespeople. Often, slaves were hired out by their masters, for a day or up to several years. Sometimes slaves were allowed to hire themselves out.
Explanation:
The most problems start with the language issue
Answer: a. testing effect
Explanation:
Testing effect is a type of threat to internal validity of an experiment. Internal validity is assessing whether a factor makes a difference in an experiment or not and if it does, whether there is adequate evidence to support this correlation.
Testing as a threat to internal validity is when a second test is taken on the outcome of a first test. Other internal validity threats are history, maturation, instrument modifications.