Final answer:
The correct verb to fill in the blank is 'tengan'.
Step-by-step explanation:
The correct answer is B. tengan.
The phrase 'Ojalá que todos mis amigos tengan mucho éxito' translates to 'I hope that all my friends have a lot of success.'
The verb 'tengan' is the correct form of the verb 'tener' (to have) in the present subjunctive tense, which is used after the phrase 'Ojalá que' to express a wish or possibility.
Learn more about Spanish verbs