Why might people in collaborative discussion begin to raise their voices? they do not listen. they have nothing valid to say. they are most likely lying. they feel like they are not being heard.

The correct answer is: they feel like they are not being heard.

If people raise their voices in a discussion it usually means that they are afraid of not being heard. It may mean acoustically ( the room is full of people and the level of noise high ), but also verbally ( they feel people don't understand their point of view ). Raising their voice does not always mean they are angry or upset. It is a defense mechanism because they may be passionate about the subject they talk about and they want the listeners' attention. They hope to create more impact with a louder pattern of speech.

Sometimes people raise their voices if they don't have a valid argument for their discussions. They fear intimidation may be the only way to get their message across even if the message is not correct.

this labor, by slow prudence to make mild.   c. ability to govern well

active voice: my father cut the tree.

passive voice: the tree was cut by my father.

active voice: people buy newspapers every day.

passive voice: newspapers are bought (by people) every day.

active voice: people have been using movies as political propaganda since world war ii.

passive voice: movies have been used as political propaganda since world war ii.

active voice: donna gave me my birthday present.

passive voice: i was given my birthday present (by donna). / my birthday present was given to me (by donna).

active voice: mom will leave the keys on the counter.

passive voice: the keys will be left (by mom) on the counter.

the words in parentheses are the agent of the passive voice and can be omitted when obvious, generic, or simply unnecessary.