In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").

Q: Fact1: the looseness of soil has a positive impact on a plant 's roots' growth in that soil, Fact2: Roots gather plant nutrients., Question: What does looseness of soil have an impact on? (A) age of the plant (B) viability of plant (C) important habitats (D) bloom time (E) climate (F) water retention (G) Plants growth (H) genetic diversity

A: G
****
Q: Fact1: Skin color is another polygenic trait., Fact2: Tourette syndrome a polygenic disorder ., Question: what is tourette syndrome? (A) malaria (B) cancer (C) trait (D) fever (E) cell (F) antigen (G) virus (H) Type O

A: C
****
Q: Fact1: Skin color is another polygenic trait., Fact2: Phenotypic expression of polygenic traits varies over a wide range., Question: Phenotypic what of skin color varies over a wide range (A) humans (B) percents (C) drastically (D) lizards (E) the environment (F) expression (G) percentages (H) calibrated

A:
F
****