Archaeologist: Our university museum possesses several ancient artifacts whose ownership is in dispute.
Background
Our university museum possesses several ancient artifacts whose ownership is in dispute.
Opposing Idea (Although)
The museum has documentation showing that the items were obtained legally.
Evidence (Given that)
There is an overriding principle that any important ancient artifact belongs by rights to the nation on whose territory it was discovered.
An institution is obliged to honor those rights.
Conclusion
Our museum should return the artifacts.
Evaluate
A few clues help us identify the parts of this argument. One of the most helpful ones is the phrase "given that" at the beginning of the final sentence. "Given that" is a premise indicator, and this sentence follows a common pattern:
Premise Indicator — Premise — Comma — Conclusion
"Given that" is followed by the premise about an institutions obligation. That statement is followed by a comma, which is followed by the argument's conclusion. It also helps to note that this final statement is a recommendation: "the museum should return the artifacts." A recommendation will commonly be the conclusion of an argument.
It helps to be sure that nothing else in the argument is a conclusion that we somehow overlooked. The premise we just mentioned speaks of an obligation "to honor those rights." What rights? The ones mentioned in the preceding sentence, the rights a nation has to important artifacts discovered on their territory.
The word "although" at the beginning of the second sentence is a hint that the conclusion will eventually refute or at least pivot away from this statement. That's exactly what happens: although the museum has documentation showing that the items were obtained legally, our museum should return the artifacts.
The very first sentence seems like a statement of fact, so it's not likely to be a conclusion. After reading the rest of the statements, it appears to be background information. It provides context, but by itself is not the conclusion.
Goal
Look for an answer that mirrors the final statement in the argument. Beware of answers that describe other parts of the argument, like premises.