The choices in your transformation are identical except for the tense: have versus had.
You need to choose the answer with the correct tense. The given sentence refers to a future possibility.
Compare:
They could win the game tomorrow.
They could have won the game yesterday, if they hadn't committed so many fouls.
When we refer to a future possibility, we use could + {bare infinitive}. When we refer to a past possibility, we use could plus the perfect: have + {past participle}.
In the transformations with "every chance", had and had are not helper (auxiliary) verbs but the lexical verb "to have", meaning "to possess"; whereas in the the phrase "have won the game", have is a helper verb forming the perfect.