Possible answers: [i] roots; [ii] flowers; [iii] water; [iv] light; [v] seeds; [vi] dark; [vii] the sun; [viii] Trees;
Given those answer options, answer the question: Fact 1: Plants exhibit phototropism, or growing toward a light source. Fact 2: Stems are positively phototropic. Given the two facts above, what do stems grow towards?
A:
[iv]