Choose the most concise and grammatically correct option to replace the underlined phrase: 'Despite the fact that he was tired, John continued to study for his exam.'

The correct answer to the question "Choose the most concise and grammatically correct option to replace the underlined phrase: 'Despite the fact that he was tired, John continued to study for his exam.'" is Option B: Although he was tired,.

The other options — A) Despite the fact that he was tired,, C) Being tired was the reason that he continued,, D) Because of the fact that he was tired, — are incorrect for this ACT Exam Prep question. As explained above: 'Although he was tired' is the most concise and direct way to express the contrasting idea. Options A and D are wordy and less efficient. Option C changes the meaning.