I believe it is the compass. It aided sailors locate the direction to which they needed to go. Even before the age of exploration, people had ships capable of long voyages. As the years pass, the designed improved to an extent that they can travel farther.
Close narrators tend to be more developed.
Every narrative has a different approach, and when a narrator develops closeness with his/her audience it can be assumed that it is a more developed narrator. This is because creating a relationship with your audience takes time, hardwork and trust. And all of these things come with real effort.
Gehrig<span> was known as the </span>Iron Horse<span> because he established a record for the number of consecutive games played by a professional baseball player, appearing in 2130 consecutive games from 1925 to 1939. His record was broken in 1995 by Cal Ripkin, Jr., of the Baltimore Orioles.</span>
I believe the answer is D, gases that consume carbon dioxide.
