Question

review the paragraph about yves le prieurs underwater breathing system.
frenchman yves le prieurs underwater breathing system revolutionized deep water exploration. before le prieur, divers could only swim as far down as their air hose to the surface would allow. early versions of goggles also became uncomfortably tight as divers swam deeper. in the mid 1920s, however, le prieur devised a system that connected a breathing hose to a compressed air tank strapped to the divers chest or back. with this advancement, divers enjoyed more freedom of movement under water. unfortunately, because air flowed out of the tank continuously, rather than only when the diver inhaled, the tank was emptied in about ten minutes. over the next several decades, inventors significantly improved le prieurs design, creating breathing systems that allowed divers to explore even greater depths.
why should the bolded sentence be removed?
it provides information that is off topic.
it provides information that is redundant.

Explanation:

The paragraph focuses on Yves Le Prieur's underwater breathing system and its impact on deep - water exploration. The bolded sentence is about early goggles becoming tight as divers swam deeper. This has nothing to do with the underwater breathing system, so the information is off - topic. The sentence is not redundant as it doesn't repeat information about the breathing system.

Answer:

It provides information that is off topic.