'If his latest movie had been a commercial success, the actor would have made enough money to sponsor his next movie.'
Based only on the above sentence, which one of the following statements is true?
A simple way to handle a conditional sentence like this is to rewrite it in plain words first, without any 'if', and see what it is really claiming. The sentence says: on the assumption that the movie had done well commercially, the actor would have had enough money to fund his next one. The phrase 'would have made' is the giveaway, it is not describing something that happened, it is describing something that was only possible under an assumption.
English marks a past event that genuinely happened with a simple past tense ('the movie was a success' or 'the movie made money'). The moment a sentence switches to 'had been' plus 'would have', it is deliberately stepping outside of what really happened and describing an alternate, unrealised version of events. So whatever sits inside that 'if' clause is being flagged as false in reality.
Applying that to this sentence: the 'if' clause is 'his latest movie had been a commercial success'. Since this clause is marked as an unrealised assumption, reality must be the opposite, the movie was not a commercial success. Nothing in the sentence tells us anything definite about the future (ruling out option A), and nothing in the sentence claims the success or the money actually occurred (ruling out options B and C, both of which restate the false assumption as if it were fact).
The statement that lines up with what the sentence is actually saying, once it is stripped of the hypothetical wrapping, is that the movie did not succeed commercially.
Let's check the other three statements against this same plain-words test. Option A talks about the future ('will certainly sponsor'), but a sentence built entirely around an unrealised past assumption gives no promise about what happens next, so it cannot be picked. Options B and C both restate the assumed condition, that the movie succeeded and that the actor got enough money, as if they were facts, when the whole point of the 'had been / would have' structure is to mark them as not having happened. Only option D avoids repeating the false assumption and instead states its negation, which is the one thing the sentence structure actually guarantees.
Statement: All flowers are beautiful. Some beautiful things are fragile.
Conclusion I: Some flowers are fragile.
Conclusion II: All beautiful things are flowers.