___________ he is good at solving problems, he cannot find a solution to his personal problem.ADespiteBSinceCYetDAlthoughAnswer: D. Although Read Explanation: Although is a subordinating conjunction used to express contrast between two ideas.Here, the contrast is that he is good at solving problems, but he cannot solve his own personal problem.Although + subject + verb is the correct grammatical structure.Why the other options are incorrect:Despite — Must be followed by a noun, pronoun, or gerund, not directly by a subject and verb.Since — Usually indicates a reason or time.Yet — Expresses contrast but does not fit naturally at the beginning in this sentence structure. Read more in App