The incomplete sentence to be completed is: "Although initial investigations pointed towards him ........"
The use of "Although" indicates a contrast between what is stated in the first part of the sentence and what follows. We are looking for a statement showing a change in direction or the opposite outcome from the initial investigation.
- The option "the preceding events corroborated his involvement in the crime." does not fit because it does not convey any contradiction to what the initial investigation pointed towards.
- The option "The additional information confirmed his guilt" also does not work, as it aligns with rather than contrasts the initial investigation's findings.
- The option "the subsequent events established that he was guilty" does not create a contrast, as it supports the initial findings instead of opposing them.
- The option "the subsequent events proved that he was innocent" introduces contrast by providing a scenario where he is exonerated, counter to the initial suspicion.
Thus, the best completion for the sentence is "the subsequent events proved that he was innocent" as it provides a contrasting conclusion to the initial suspicion suggested by the investigations.