Homework check about hemoglobin and oxygen affinity

So their is this article: "Hemoglobin Function and Physiological Adaptation to Hypoxia in High-Altitude Mammals" by Jay F. Storz (https://academic.oup.com/jmammal/article/88/1/24/927083)

And here is the following 5 questions which I already answered but would love if someone can check some or all of them for me.

1.How might animals living in hypoxic conditions adapt to an oxygen-poor environment?

Increasing affinity of hemoglobin for oxygen > which increases ability of hemoglobin to bind to oxygen in environment with low partial pressure for oxygen.

2.   True or False: at higher altitudes, the arterial partial pressure of oxygen is reduced, which may reduce tissue oxygenation.

True

3.   According to the Storz 2007 paper, deer mice with a higher bO2 helps them survive in

a.   Warmer environments
b.   Oxygen-poor environments
c.   Cooler environments
d.   Oxygen-rich environments

4.   Animals that are adapted to high-altitudes are expected to have _______ shifted ODCs.

a.   Left
b.   Right
c.   Up
d.   Down

5.   What alpha-globin genotype has the highest VO2max when tested at high altitudes (3800m)? Choose the correct answer.

a.   a0c0/a0c0
b.   a0c0/a1c1
c.   a1c1/a1c1

Whats your thoughts on this answers guys?!