Answer:
C: effect
"a delicate situation for the President to be placed in". is an effect statement.
while,
"The accounts we receive here, are so opposite and unsatisfactory that we know not on what to rely." is the cause of that effect
Step-by-step explanation:
This passage is from "American Plague", a 2003 non-fiction adolescent history by Jim Murphy. In these lines George Washington, the first president of the USA is complaining inadequacy of reliable information about yellow fever epidemic of 1793 in Philadelphia.
An effect statement tells us about an event or situation happening because of another event (cause) which had occurred earlier.
A cause statement is one as a result of which some other event/situation takes place.