Fact 1: Gametes then unite in fertilization and form a diploid zygote. Fact 2: Examples of gametes are ova and spermatozoa. Given the two facts above, what are united in fertilization for form a diploid zygote?

(I) h2o;
(II) Veins and arteries.;
(III) produce offspring;
(IV) Most plants;
(V) joined;
(VI) ova and spermatozoa;
(VII) glucose and fructose;
(VIII) Organic compounds;
(VI)