Concept:A collective noun refers to a single word that denotes a group of individuals or items.
Explanation:Option A 'Army' is a correct collective noun for a group of soldiers.
Option B 'Sheeps' is wrong because the correct collective noun for sheep is 'flock', and the plural of sheep is also sheep, not sheeps.
Option C 'Scissors' is a collective noun; it is always used in plural form and can be quantified as 'a pair of scissors'.
Option D 'Daughters-in-law' is a plural compound noun, not a collective noun; however, it is grammatically correct as a plural form.
Among the given choices, only 'Sheeps' is an incorrectly formed collective noun.
Answer:B. Sheeps