Over the last five years, every new major alternative energy initiative that initially was promised government funding has since seen that funding severely curtailed.
Evidence
Over the last five years, every new major alternative-energy initiative that initially was promised government funding has since seen that funding severely curtailed.
In no such case has the government come even close to providing the level of funds initially earmarked for these projects.
Large corporation have made it a point to discourage alternative-energy projects.
Conclusion
It is likely that the corporations’ actions influenced the government’s funding decisions.
Evaluate
The argument establishes a difference between what was promised and what was given to alternative-energy projects and then suggests an explanation—it’s because large corporations have influenced the government’s funding decisions. The right answer will likely eliminate an alternative explanation or somehow strengthen the connection between corporations and the decision to curtail funding of alternative-energy projections.