Historian: The revolutionary party has been accused of having many overambitious goals and of having caused great suffering.
Conclusion (So)
It is clear that the revolutionary party was not overambitious and caused no suffering.
Evidence
Most of the revolutionary party's goals were quickly achieved and the party didn't have enough power to cause the suffering the critics claim it caused.
Evaluate
The conclusion actually makes two claims, so we should separately analyze each's validity.
Given that ... the party quickly achieved most of its goals, Do we have to accept that ... the party was not overambitious?
No, we could say they were still overambitious. Maybe the remaining un-achieved goals are hopeless, pie-in-the-sky fantasies that are overambitious.
Given that ... the party didn't have enough power to cause the suffering the critics claim it caused, Do we have to accept that ... the party caused no suffering?
Heck no. Maybe the critics claimed that the party caused 10 megatons of suffering, whereas the party in really only caused 3 megatons of suffering. There's a wide range between "less than critics accuse them of" and "nothing".
Goal
Look for an answer choice saying, .
Or look for one saying,