The best option in terms of the Gentleman’s Agreement of 1907 would be that "<span>The United States would not segregate Japanese immigrants, and Japan would not allow further emigration to the United States," although it had less to do with segregation and more to do with not allowing more Japanese into the US. </span>
B. Allowing scholars to study topics other than those supported by the Catholic Church.
True the trachea does connects to the pharynx