We are looking for an answer that strengthens the theory this temple was built for the God Luga and one that weakens. Lets look at the answer choices
"An archaeological excavation team working on the site of an ancient Mesopotamian city found a temple structure theorized to have been a temple to the God Luga. The structure was located in the “low town” area, outside the raised and fortified “citadel” area, and built of mud bricks. The building also contained an altar on which were found the burnt remains of fish, most likely offerings to the concerned deity."
Buildings were rarely constructed with mud bricks in ancient Mesopotamia.
-this is out of scope, while temples of the gods may have been built out of materials not consisting of mud, the article provides no insight to this so eliminate.
Ancient Mesopotamian temples built in cities were almost always built in the “citadel”.
-this information actually weakens the claim since it gives another reason for why this temple was places in the citadel and why it isnt actually a contributing piece of evidence for why this could be Luga's temple. Essentially, its arguing that this could be ANY temple
Some Mesopotamian buildings outside the “citadel” were also heavily fortified.
-out of scope, doesnt contribute much to the argument
The altar was made of stone not commonly found in the region.
-also out of scope, if the article mentioned Luga's temple having stone outside the region it would strengthen but for how the argument stands now its irrelevant
Fish were given as offerings almost exclusively to the God Luga.
-this strengthens the theory that this is Luga's temple because they found evidence of fish remains in the site. If Luga was primarily given fish for offerings this helps the theory