C. unsanitary conditions were dangerous because people could be prone to sickness and diseases and few windows made the tenements too hot to live in.
The answers are b, c,c hope this helped and tell me what you got :)
Answer: Internal reliability
Explanation: Internal reliability is used to evaluate the consistency of a result across items within test. In internal reliability, the consistency or how well a correlation is established between different items or variables subjected to the same test.
In the scenario above, the construct measured is aggression across multiple children using a questionnaire and the correlation or consistency of their result were evaluated.
Two land marks in Paris are the Eiffel Tower and the Arc de triomphe
