The only option from this list that shows the appropriate use of apostrophes would be "<span>the witnesses' testimonies" since in this case "witnesses" is plural. </span>
The correct answer is b. the witnesses' testimonies.
Explanation:
in the English grammar exists what is called the Saxon Genitive or Possessive 's. It is used to indicate possession and one of the rules is that if the possessor is a regular plural noun that uses the s at the end, the apostrophe is used at the end. In this case, the noun "witnesses" is a plural noun and the S has to be placed at the end, and then comes the object that is possessed.
