~전이에요 when do I use this?

Which of the following statement about groups is likely false? a.)you can be part of one and not know it.b.)interdependence can lead to frustration.c.)there is usually a common purpose. d.)structure tends to exist within them.

Is not a component of hearing. a. attempting to recall b. making an effort to attend c. providing feedback d. all of the above

After swimming for hours he was tired what is the personal pronoun in the sentence below