Final answer:
True, the sentence "A hurricane watch has been issued by the authorities" is an example of passive voice because the subject is the recipient of the action, and the sentence is structured with the appropriate verb forms to indicate passive voice.
Step-by-step explanation:
The sentence "A hurricane watch has been issued by the authorities" is written in passive voice. We can identify this by noting that the subject of the sentence (a hurricane watch) is not performing the action.
Instead, it is being acted upon by another agent (the authorities). Additionally, the sentence contains a form of the verb "to be" (has been) combined with the past participle of the main verb (issued), which is typical of the passive construction.
We often use passive voice when the doer of the action is unknown, unimportant, or to focus on the action itself rather than the actor. It can be helpful in various contexts, such as when maintaining an objective tone or when the actor is irrelevant to the point being made.