Which sentence contains a linking verb?

What can the reader infer about the fears and values of the ancient greeks based on this description of the cyclops’s island?

What is the best summary of this monologue

The compass tests are tools used: a. when students are preparing for the act or sat. b. in lieu of the act or sat. c. when students score extremely high on the act or sat. d. to determine which level of classes a student should be placed in.