Counterclaim: Students sometimes need to be able to use their phones, especially in an emergency situation.
Which claim best corresponds to this counterclaim?
O A. Schools should provide students with cell phones.
O B. Cell phones are too expensive and should be cheaper.
O c. Cell phones can be useful learning tools in the classroom.
O D. The use of cell phones should be banned in schools.

c. to depict the cunningness of the federal soldiers

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.

lets none because you provide no details.

a. it reminds protestors of the reasons they have to protest.