Answer:
blind
Explanation:
To quantify the extent of atherosclerosis, each pathologist looked at every autopsy specimen and assigned a score. To keep the pathologists from knowing the source of the tissues beforehand, the study was <u>blind</u> to the pathologists.
Atherosclerosis is a disease resulting from the build up of fats around the arteries which could cause blood flow restriction or even bursting of the artery resulting in hemorrhage. It is more common in obesed individuals.
The advantage of blinding the pathologist from knowing the source of the tissues is to increase objectivity in their analysis and remove any form of biased judgement based on the source of the tissue. For example, if the pathologist is aware that the source of the tissue is from an extremely obese man, he/she may likely give it a higher score.
I think maybe there were some options that you didn't copy?
Else I can say that a letter written at the time of a historical event would be a primary source - as opposed to a secondary source which is written well after the relevant event.
Answer:
social, economic, and job-creating bills that greatly increased the authority of the federal government—the Federal Emergency Relief Administration
Explanation:
It mean circulation, or sometimes referee to as compressions.
Answer:
Stranger wariness
Explanation:
Once one baby has developed a secure attachment with his/her caregiver. The phenomenon of stranger wariness starts to appear.
Stranger wariness refers to the anxiety that babies experience when they are approached by an unfamiliar person, specially when they are under novel situations. Since babies prefer familiar adults, they might react with concern, fussing or crying when approached by an stranger.
In this example, Tyra's niece gets a smile from the mail carrier and she hides her face in Tyra's shoulder and looks back at him with concern.
<u>The carrier is an unfamiliar adult who approached to Tyra's niece (by smiling) under a situation that doesn't take place very often</u> (the mail carrier stepping inside the house) <u>so the baby reacts with concern.</u> This is an example of Stranger wariness.