The correct answer is: 13245.
The word “both” is a determiner that refers to two or more things. In this case, it refers to the two people who invited us. The word “invited” is a verb that means to ask someone to do something. In this case, it means that the two people asked us to come to their party. The word “us” is a pronoun that refers to the speaker and the listener. In this case, it refers to the speaker and the person they are talking to. The word “of” is a preposition that indicates possession or association. In this case, it indicates that the party is being held by the two people who invited us.
Option A: 25314 is incorrect because the word “both” comes before the word “invited.”
Option B: 25413 is incorrect because the word “invited” comes before the word “us.”
Option C: 13254 is incorrect because the word “us” comes before the word “of.”
Option D: 13245 is the correct answer because it follows the order of the words in the sentence.