Part of a sentence or clause containing a verb and stating something about the subject
The source could be wrong or biased or both.
1: A. deer's
2: B. king's
3. A. books'
4. B. turtle's
For 1., we're looking for more than one deer. Since two deer left tracks, it is plural. Add the plural possessive form 's. (deer's) (You can't say "deers" even if there are more than one, the proper way is "deer". That's why the apostrophe is before the s.)
For 2., we're looking the crown of only one king, so it is singular. Add 's (king's).
For 3., we're talking about multiple books, so you add the plural possessive form s' (books').
For 4., there is one turtle, so it is singular. Add 's (turtle's).
I hope this helped! :-)
a-gree-a-ble is the correct breakup for the word agreeable