Answer:
To signal a solution.
Explanation:
A signal word or the transition word can be defined as those words or phrases that give hints about what is going to take place. There are several types of signal words that signal, for example, cause-and-effect, compare or contrast, time or sequence, etc.
The author uses these signal words to help the readers move along their thoughts.
<u>In the given passage the author has used the signal word to signal a solution. The given paragraph states the solutions to the problems of the owners of the cows</u>.
Thus the correct option is the third one.
