The crucial question regarding family structure is: Whatever the structure, does it fulfill the five essential functions for school-age children? What structure will our culture prefer? Which structure meets most of the needs of its members? Which of the five essential functions are fulfilled in which structure?

answer; knowledge,reason,and judgement;

answer; coal reserves in the u.s are far greater than petroleum reserves;

i think it's d because a "rythem" is a

1)a particular type of pattern formed by rhythm.

2)a strong, regular, repeated pattern of movement or sound.

3) the systematic arrangement of musical sounds, principally according to duration and periodic stress.

so, d mabye.