Why did Hitler want to capture the city of Stalingrad in the Soviet Union?

Question 5 options:

It was the capital city

It house the entire military

It was a major industrial city and near oil fields

It was Stalin's hometown

Hitler invaded (or tried to) invade Stalingrad because it was a large factorial city near the Caucuses which had large oil fields. Capturing it would be a heavy blow to Soviet morale because Stalingrad was named after Joseph Stalin, the leader of the Soviet Union.