Answer: Spain and Portugal
Explanation: The subject is the who or what of the sentence. It's what the sentence is about. In this sentence, the places that are occupying the Iberian Peninsula are Spain and Portugal.
That would be its capital city, Tbilisi, with a population of roughly 1.5 million.
At the auction, I bid on the antique dresser. This is the answer because it has a subject (I) and verb (bid), whereas the top answer choice needs to say “is leaving”