Future Perfect Tense Verbs in Spanish

The future perfect tense in Spanish is used to talk about actions that will have been completed by a certain point in the future. It is formed by using the future tense of the auxiliary verb 'haber' followed by the past participle of the main verb.

In the given sentence "Yo pasaré el examen por el fin del año", the correct form of the verb in the future perfect tense is 'habré pasado'. This is because the subject 'Yo' is combined with the future tense form of the verb 'pasar', and to form the future perfect, we use the auxiliary verb 'haber' in the future tense followed by the past participle of the main verb, which is 'pasado' in this case.

So, the sentence "Yo habré pasado el examen por el fin del año" would mean "I will have passed the exam by the end of the year" in English.