The answer is b. They both lay amniotic eggs.
Both birds and reptiles belong to a clade of vertebrates, Amniotes, which lay amniotic eggs. Mammals also belong to Amniotes. Amniotic eggs can remain within the mother after fertilization or can be laid on land. On the other side, <u>an</u>amniotic eggs are usually laid in the water.
The answer is d. prevention of muscle strains. Other benefits
of flexibility are Joint health, prevention of low back pain injuries, temporary
reduction of post-exercise muscle soreness, relief of aches and pains, relief
of muscle cramps, maintenance of good posture and balance, relaxation.