Rationale
In spite of
This phrase effectively conveys the idea that she attended the party regardless of her feelings toward the host, indicating a contrast between her dislike and her actions.
A) Despite
While "despite" could seem appropriate, it typically requires a gerund or noun following it (e.g., "despite her dislike") rather than a full clause. Therefore, it does not grammatically complete the sentence as intended.
B) Even though
"Even though" introduces a dependent clause and indicates a contrast, but it does not fit into the sentence structure provided. It would require a rephrasing, such as "Even though she disliked the host, she went to the party," thus making it an unsuitable choice for this sentence completion.
C) Although
Similar to "even though," "although" is also used to introduce a dependent clause. It would necessitate a complete restructuring of the sentence to be grammatically correct, as in "Although she disliked the host, she went to the party," making it incompatible with the original format.
D) In spite of
This phrase correctly conveys the intended meaning and fits the sentence structure perfectly. It indicates that her dislike for the host did not prevent her from attending the party, highlighting the contrast between her feelings and actions.
Conclusion
The phrase "in spite of" is the most suitable choice to complete the sentence, as it accurately reflects the intended meaning of attending the party despite her negative feelings. The other options—despite, even though, and although—fail to fit grammatically or contextually within the sentence structure, thus confirming "in spite of" as the correct answer.