Choose the answer that best matches the word enclosed. Use context clues to determine the meaning of the word, if necessary.

The horse broke her leg when she was only a (yearling).

1. newborn
2. trainee
3 foal learning to walk
4. youth between 12 and 24 months old

3. foal learning to walk

The correct answer is 4. youth between 12 and 24 months old. In the sentence, it states that the horse broke her leg when she was only a "yearling." A yearling refers to a young horse that is between 12 and 24 months old.

To determine the meaning of the word "yearling" in the given context, we can look at the information provided. It mentions that the horse broke her leg when she was only a yearling. From this, we can gather that the horse was young when her leg broke.

Now, let's examine the answer options:

1. "Newborn" refers to a recently born or newly hatched animal. However, the sentence suggests that the horse was at least a year old when her leg broke, so this option does not match the description.

2. "Trainee" refers to someone undergoing training. This does not fit the description of a young horse.

3. "Foal learning to walk" seems rather close, as foals are young horses. However, the term "yearling" usually refers to a horse that is at least one year old, while a foal is typically less than a year old. So this option does not exactly match the given context.

4. "Youth between 12 and 24 months old" seems to be the best choice. A yearling is generally defined as a young horse between the ages of 12 and 24 months, which aligns with the provided information that the horse broke her leg when she was young.

Therefore, the answer that best matches the word "yearling" in the given context is option 4: "youth between 12 and 24 months old."