Final answer:
The correct answer to complete the sentence is 'but also'. So, the full sentence will be: She not only works hard but also has a good relationship with all her workmates.
The correct answer is:3) but also
Step-by-step explanation:
The phrase "not only...but also" is used to join two parallel ideas or actions. In this case, the sentence is highlighting two qualities of the person: working hard and having a good relationship with her workmates. The conjunction "but also" is used to introduce the second idea and emphasize that both qualities are present.
Here's how the sentence would look when filled in with the correct option: She not only works hard but also has a good relationship with all her workmates.
This construction allows for the expression of two related ideas in a clear and concise manner.
The correct answer is:3) but also