Note: this question can be safely answered even without the article.
Answer:
The phrase that suggests a tone that is formal but subjective is:
C- "most generous and attractive"
Explanation:
Among the options given, there are two suggesting a subjective tone:
B- "loads of fun with it"
C- "most generous and attractive"
<u>Subjectivity means expressing one's own opinions and feelings concerning a topic. If I state that something is fun, or that someone is attractive and generous, other people may very well disagree with me. It is just my opinion and it is, therefore, subjective. Different people can have different perceptions of the same thing or person.</u>
But the question needs one more thing from us. It asks for<u> a phrase that has a formal tone.</u> In that case, "loads of fun" should be eliminated since it's tone is more colloquial, informal. On the other hand, "<u>most generous and attractive" does convey more formality.</u> Therefore, the best option is:
C- "most generous and attractive"