The word that best completes the sentence is: A. excursion
The archeology students were excited to take off on their research <u>excursion </u>to view the sacred ruins.
<h3>What is an excursion?</h3>
An excursion is a trip that is often engaged in for the purpose of entertainment or education.
When the archaeology students engaged in the excursion, their aim was to learn more about the sacred ruins. Thus, we can conclude that they embarked on an excursion.
A secret committee had determined to rid the town of all improper persons. This was done permanently in regard of two men who were then hanging from the boughs of a sycamore in the gulch.