Which sentence from the text provides a reason why the Hindenburg was outdated?
The Hindenburg was becoming obsolete even as it was a marvel of the modern
age. It could carry passengers in luxury across the Atlantic faster than the most
luxurious ocean liner (2-3 days versus 4-5). It could transport tons of supplies.
It could provide a nearly silent magical floating ride through the skies. Yet in
October 1936 Pan Am's "flying boat airliner" Clipper had flown passengers from
San Francisco to Asia in six days, and the airline was taking steps for trans-
Atlantic flights that would take 27 hours.

Yet in October 1936 Pan Am's "flying boat airliner" Clipper had flown passengers from San Francisco to Asia in six days, and the airline was taking steps for trans-Atlantic flights that would take 27 hours.

Explanation:

The Hindenburg was shown to be obsolete by the sentence above because of the time it took to complete a trans-Atlantix flight.

The new "flying boat airliner" was going to cross the Atlantic in 27 hours and the Hindenburg could only do it in 2 - 3 days which meant that it was up to 2 days slower.

People would prefer the faster vessel and move towards it with time which would eventually end the usage of the Hindenburg.

c) in the address bar

explanation:

this is the only place where url's may be found or entered in to successfully get to a web page.