The correct answer to this question would be alternative A)"Tyrants were power-hungry militants who grabbed absolute control by popular vote."
In alternative A, it reads that Tyrants are militant who grabbed absolute control by popular vote, which is not true. When we take Hitler, for example, one of the greatest tyrants the world has ever seen, he got to power not by being elected by popular vote, but by being appointed to be chancellor.
In alternative C, the truth is said about Solon, for he really fought against slavery.
In alternative B, the truth is said about Nobility.