"<span>D. Chen answered the questions most eagerly of all" is the only option that is correct, but it should be noted that there could be a "</span>the" before the word "most".
This is because the Spanish monarchy had been in great relations with the Catholic church and had many ties with it. Many Spanish cardinals were popes even. As Protestantism spread it's influence throughout Europe, Spaniards opposed it due to their connection to Catholicism.
This would be an informative speech. You're using it to inform your classmates about the bats. You're not necessarily persuading, and while it certainly can be entertaining, that's not the primary purpose.
She is afraid she is going to put salt into the turtles eyes