Select the most appropriate option to substitute the bracketed segment in the given sentence. If there is no need to substitute it, select 'no substitution required'.
The rodeo is (great way to unite soldier's skills and build) esprit de corps.
1
a great way to unite soldiers' skills and build
2
No substitution required
3
great way to unite soldier's skills and building
4
a great way to unite an soldier's skill and build