According to the definition of restrictive clauses, it is a clause which hides possible meaning of preceding subject by limiting it.
And with its definition we can easily determine the needed clause in each sentence:
1. <span>The girl with the golden hair is the one we are looking for.
2. </span><span>The dog that ate my homework is called Henry.
</span>3. I’m saving the muffins that have cherries<span> for my sister.
4. The smile that she gave them was beautiful.
As you can see it can pose as characteristic of a subject in some measure.
Do hope it will help you!</span>
It depends on which words are bolded.
If the words in bold are <em>to work, </em>then this is an C. infinitive.
<span>textual evidence to support the thesis</span>
