Answer:
A. Yes, cattle are typically in labor for one to two hours so anything beyond could be an indication of an issue.
Step-by-step explanation:
Elizabeth should be concerned at this point because seven hours is well beyond the typical length of time that cattle are in labor. Although the length of time can vary, most cows will give birth within one to two hours of the start of labor. If Elizabeth's cow has been in labor for seven hours without the water breaking, it may be an indication that there is an issue that needs to be addressed. She may want to contact a veterinarian or other animal expert for advice on how to proceed.