The answer is letter A.
Tokugawa’s sons controlled the cities of Mito, Wakayama, and Nagoya. The Tokugawa clan<span> is considered as one of the powerful family during their era. <span>The Tokugawa family consists of three houses, this includes the Mito, Owari (Nagoya city), and the Kishu (Wakayama city).</span></span>
I am pretty sure that three options from the list represented above are suitable for your question. Just checked the list of activies and come across these ones : discus throw, wrestling and boxing. Therefore A,B,C are the correct ones.
Personally, I think it's because it was simple and free entertainment. Given that there wasn't a taboo around death and watching others die, and it actually being encouraged, like how it was in Anciient Rome, I'd say a lot of people would actually at least try out visiting a gladiatorial contest.
A, because it explains a lot of the reason everything happened
Two of the major ways in which the Civil War amendments (commonly referred to as the Reconstruction Amendments) added to individual freedoms was that they abolished slavery and involuntary servitude (with the 13th Amendment) and made it so every US citizen had equal protection under the law (with the 14th amendment).