which of these is a complete sentence?

To determine which of these options is a complete sentence, we need to understand what constitutes a complete sentence. A complete sentence typically contains a subject, a verb, and expresses a complete thought. Let's analyze each option to identify the complete sentence:

1. "The cat jumped over the fence."
This option contains a subject ("The cat"), a verb ("jumped"), and expresses a complete thought. Therefore, it is a complete sentence.

2. "Eating lunch in the park."
This option lacks a subject and a verb. Although it contains a gerund phrase ("Eating lunch"), it does not form a complete thought on its own. Thus, it is not a complete sentence.

3. "Beautiful flowers blooming in the garden."
Similar to option 2, this option lacks a subject and a verb. It also consists of a noun phrase ("Beautiful flowers"), followed by a present participle ("blooming"), but it does not express a complete thought. Hence, it is not a complete sentence.

In conclusion, the only option that is a complete sentence is option 1: "The cat jumped over the fence."