Which of the following is a phrase fragment? (1point)

O Since the weather forecast is beautiful this weekend.
O Let's ask our parents if we can go tubing.
O Did you just say that?
O A great dog, that's what we have!

The phrase fragment is: "A great dog, that's what we have!"

The phrase fragment in the given options is:

O Since the weather forecast is beautiful this weekend.

To determine which of the following is a phrase fragment, we need to understand what a phrase fragment is. A phrase fragment is a group of words that does not express a complete thought and lacks a subject, a verb, or both.

Let's analyze each option to determine if it meets the criteria.

1. "Since the weather forecast is beautiful this weekend." - This sentence includes a subject ("the weather forecast") and a verb ("is"), making it a complete thought. Therefore, it is not a phrase fragment.

2. "Let's ask our parents if we can go tubing." - This sentence contains a subject ("we") and a verb ("ask"), making it a complete thought. It is not a phrase fragment.

3. "Did you just say that?" - Again, this sentence has a subject ("you") and a verb ("say"), making it a complete thought. It is not a phrase fragment.

4. "A great dog, that's what we have!" - This sentence lacks a clear subject and verb. Although it has words and a phrase, it does not form a complete thought. Therefore, it is a phrase fragment.

Therefore, the phrase fragment among the given options is: "A great dog, that's what we have!"