In a 10-billion-year -old galaxy there should have been ample ____________ for at least one species to escape its own mess, and to spread across the stars, filling every niche.

Options

A. negligence
B. opportunity
C. surveillance
D. supply

Answer

B

Explanation

The most appropriate world that would fill the blank is 'opportunity' which means a time or set of circumstances that makes it possible to be something. All the other words do not fill the blank appropriately, hence option (b) is the most suitable answer choice. Negligence means failure to take proper care over something. Surveillance means close observation, especially of a suspected spy or criminal.