Children, God, and afterlife

A) are all forms of meaning equated with "life as an investment."
B) are all forms of meaning created within ourselves, like stories.
C) are all meaningful because they create happiness.
D) are all forms of meaning located outside of ourselves, to which our lives refer.

The given options suggest different ideas about where meaning comes from. Option A suggests that meaning is equated with investing in one's life, which implies that meaning comes from within ourselves. Option B also implies that meaning is created within ourselves, like stories. Option C suggests that happiness is the ultimate goal of meaning, which is again related to our internal state. Option D suggests that meaning is located outside of ourselves, which is the closest to the idea of God, afterlife, and children being meaningful not just to us as individuals, but in relation to something greater than ourselves. Therefore, the best choice is D.