Final answer:
Floating teeth in horses refers to the process of rasping, which is filing down the sharp edges of their teeth, corresponding to option d) Rasping teeth.
Step-by-step explanation:
In horses, the term floating teeth refers specifically to the process of rasping or filing down the sharp edges of a horse's teeth, which can develop from uneven wear. This is crucial for maintaining the animal's dental health as it prevents issues like cutting the inside of the mouth or having difficulty chewing feed. In the provided options, floating teeth corresponds to d) Rasping teeth.
Horses, like most mammals, have several types of teeth adapted to various functions such as the incisors for cutting and canines for tearing. The premolars and molars are designed for crushing and grinding food. Due to their diet and the way they chew, horses can develop sharp edges on these molars and premolars that need regular maintenance via floating. Thus, please mention the correct option in the final answer, which is d) Rasping teeth.