A reason why you might not be optimistic as a Jamestown settler is that Most of the settlers died.
The Jamestown colonies faced several problems such as the fact that they did not have a lot of farmers amongst them which meant they couldn't farm.
This led to starvation and coupled with the disease they encountered, around 80% of them died which was the large majority.
In conclusion, option A is correct.
Find out more on the Jamestown colony at https://brainly.com/question/6700105.