Some questions are still so vague that it takes way longer for me to figure out the question than the answer.
"How many ninjas can the main character carry"
my first instinct is 3 or 4, being a team, but that wasn't in the choices. I'd guess it's 7, (I got it wrong with unlimited with 100 and 1000 as other choices, I thought maybe they meant "have unlocked") by the fact that you can have 3 ninjas on standby to swap during change line up bit, plus the 4. I knew the "7" was there, but it simply didn't occur to me because I didn't know that was what the question was asking...