Why does macbeth decide to kill macduff's family explain what this shows about macbeth?

That time of year thou mayst in me behold when yellow leaves, or none, or few do hang upon those boughs which shake against the cold, bare ruined choirs, where late the sweet birds sang in me thou sees the twilight of such day as after sunset fadeth in the west; which by and by black night doth take away, death's second self that seals up all in rest. in me thou seest the glowing of such fire that on the ashes of his youth doth lie, as the deathbed whereon it must expire, consumed with that which it was nourished by. this thou perceiv'st, which makes thy love more strong, to love that well, which thou must leave ere long. the first stanza compares the leafless limbs of a tree to a.yellow leaves b.sweet birds c.bare choirs d.summer

What is the significance of the novel's title? what is the "sweet hereafter"? a). a place you go after a tragedy takes your life b). a beautiful place the dead go, like heaven c). into the sunset, an ending that is not defined d). a dark sad place the dead go before rebirth

Don't eat the mushroom its poisonous