We learned that deer, sheep, and oxens use their teeth for grinding leaves. which underlined irregular plural noun is misspelled?

Oxens is misspelled. It should be oxen.

(I think)

There is no underline. Put parentheses around the options.

Otherwise, I think it's oxens.

A.  social divide

Explanation:

The relationship between Heathcliff and Catherine was a dysfunctional one. During the initial years they were much into each other. With the progression of their ages and experiences, their relationship became dark. Miscommunications, and jealousy entered in their lives with time and their story ended at a tragic note. Their love is full of passion and longing for each other. Catherine's ambitious nature to attain a social standard and Heathcliff's unalloyed love is highlighted towards the end of the story. Social forces are oppressive and restrictive that do not allow them to unite.