Final answer:
The connotative meaning of 'little souls' in Stephen Crane's poem 'War is Kind' refers to the youthful naivete and inexperience of the soldiers, implying a vulnerability that exists despite their participation in war. The correct answer is option C.
Step-by-step explanation:
In Stanza 2 of Stephen Crane's poem "War is Kind," the phrase "little souls" connotatively refers to the youthful naivete of these soldiers, option C. This is a non-literal expression that suggests the soldiers' experience and emotional development may not be commensurate with the enormity of war they are facing. The choice of "little" serves to diminish their stature, which in the context of war, could be related to their minimal experience and possible innocence, as opposed to connoting their physical size, significance, or minor importance.