Self-study
When a bird flies, powerful forces converge on its shoulder joints. ███ ██████ █████ ████ ██ ████ ██████ ██████ ███████ █████ ██████ ██████ ██████ █████████ ████████ █████ ███████ ███ ████ █████████ ██ █████ ███████ ██ █████████ ████ ██ █ ████████ ████ ████████ ███ ████ ██ ███ ████████ ██████ ██ ████ ████████ ████ ██ ████████
Summary
Any time a bird flies, powerful forces converge on its shoulder joints. If they are flying, the bird’s wings must be kept stable during flight. If their wings are stable, something needs to balance these powerful forces. The only structure in birds that can balance these forces is a ligament that connects the wings to the shoulder joint. So that ligament must be (the correct answer is the conclusion).
Strongly Supported Conclusions
The ligament is how birds stabilize their wings while flying.
Bird Flying -> wings stable -> balance powerful forces
7S
Analysis by 7Sage
10.
Which one of the following ████ █████████ █████████ ███ █████████
a
the only structure ████ ██ █████████████ ██ ████ ██████
b
the reason that █ ██████ █████ ████ ██ ████ ██████ ██████ ██████
c
the sole connection ███████ ███ ████ ███ ███ ████████ █████
d
the source of ███ ████████ ██████ ████ ████████ ██ ███ ████████ █████
e
the means by █████ █ ████ ██████████ ███ █████ ██████ ██████