Which is true? O. Sergeant York won the Medal of Honor for killing several Germans and taking 132 as
P. O.W.
O. The Lost Battalion - a group of more than 500 U. S. soldiers - was surrounded by the
Germans and suffered heavy losses.
O. Cher Ami was a decorated carrier pigeon who carried a famous message when the
Lost Battalion came under friendly fire.
O All of the Above

The first is true, and so is the 3rd so I would go with all of the above.

Explanation:

Alvin York killed 20 German soldiers and almost single handedly took 132 prisoner. He is renowned for his bravery and his strong Christian Faith. Cher Ami was a French pigeon donated by the British to carry messages.

i believe that the answer to the question provided above is that  establishing smaller ethnic communities within larger communities  gives more chance for people to know each other more but this might lead to the  conflict between groups.

the three answers (for plato at least) are:

b-condemned sola fida 

d-set rules for establishing seminaries and for educating clerics in the seminaries 

f-recommended moderation in the sale of indulgences and banned the sale of false indulgences