Answer :
Answer:
a. All of these
Explanation:
Based on the answers provided within the question it can be said that all of the answers are reasons as to why their predictions are often so far off. It is hard to predict how technology will affect humans as a civilization since there are an immense number of variables that need to be taken into account. Each of which can spark a ripple affect and change all of humanity. Imagination is the only tool we truly have in order to make these predictions.