Look at the horse! It ______ tail.

Answer:

This question requires choosing the correct possessive pronoun or noun phrase to indicate ownership of the tail. Given the context of "Look at the horse!", the most logical completion would relate to the horse's tail.

If the choices were similar to the ones in the image (e.g., 'a long', 'their', 'his', 'her'), the most appropriate answer referring to a single horse would be:

Look at the horse! It has a long tail.

However, if the question implies possession of the tail by 'they', then 'their' would be used. Based on the structure, "a long" is the most direct descriptive completion.