Answer :
Final answer:
The phrase 'has a head screwed tightly to her shoulders' means that someone is intelligent and can think clearly. It indicates a focused and determined mindset.
Explanation:
The phrase 'has a head screwed tightly to her shoulders' means that the person being described is intelligent and can think clearly. It suggests that they have a strong mind and are capable of making logical decisions. The phrase is often used to praise someone's mental abilities.
In the context of the given examples, the phrase is used to describe characters who have a focused and determined mindset. For example, the woman in the first example is shown to have a calm and strong face, indicating that she has her thoughts under control.