(23) At his home in California, he was the ruler of his domain; but here he must prove himself as a leader. How should this sentence be rewritten, if at all? At his home, in California, he was the ruler of his domain but here he must prove himself as a leader. At his home, in California, he was the ruler of his domain but here he must prove himself as a leader. At his home in California, he was the ruler of his domain, but, here he must prove himself as a leader. At his home in California, he was the ruler of his domain, but, here he must prove himself as a leader. At his home in California, he was the ruler of his domain, but here he must prove himself as a leader. At his home in California, he was the ruler of his domain, but here he must prove himself as a leader. Leave as is.