Karen, who is 15 years old, is repeatedly arguing with her mother about the chores her mother has assigned to her. This type of repeated, ongoing arguing is also known as ______

Older siblings are a source of care and comfort for younger siblings when they are distressed or upset

Indicate whether the statement is true or false

According to the text, moderate smoking shortens the lifespan by ____ years

a. 2 b. 7 c. 14 d. 23