Final answer:
The correct conjugation in the preterite for the subject 'tú' in the sentence 'tú almorzaste en la cafeteria' is 'almuerzaste'.
Step-by-step explanation:
The correct conjugation in the preterite for the subject 'tú' in the sentence 'tú almorzaste en la cafeteria' is option e. almuerzaste.
In this sentence, 'almuerzaste' is the correct conjugation of the verb 'almorzar' in the preterite tense for the subject 'tú', meaning 'you' in English.
Other options are incorrect: 'almocaste' (option a) is the preterite conjugation for 'almocar', 'almorcé' (option c) is the preterite conjugation for 'almorzar' in the first person singular, and 'almueziste' (option d) is not a correct conjugation.
Learn more about Conjugation of 'almorzar' in the preterite tense for the subject 'tú'