The answer should be something like this:
how best to allocate scarce resources among competing uses.
Answer:
a letter written by a person who is describing a current event
Explanation:
A primary source is a document from the time period of the event.
While most of these could be considered one, you have to do a process of elimination.
A scholarly article about an old event isn't a primary source, so it's not that.
An interview with a reporter who wrote about a current event is not a primary source because it is not the original document from the reporter.
A student's report about an event that occurred during her lifetime is a primary source, but it is not the best example.
Early alzheimer’s disease is associated with the condition
that George was born with called the trisomy 21. The trisomy 21 or also known
as the down syndrome causes an individual to develop physical growth delays and
causes a person to exhibit intellectual disability that could either be mild or
moderate.