Wings would be different in human and pigeons.
Some factors could be:
weather
ressources
A resonable conclusion is one that is well defined and explained and contain all the neccessary elements
so
The statement given below present a reasonable conclusion
<span>Our football team needs sufficient equipment to practice and play safely
</span>because it represent all the basic elements
so i conclude option A is correctly
hope it helps
The third example will be “cancer”