Question

fill in the blank. there are over ______ miles of undersea cables. 75,000 75 750,000

Explanation:

To determine the correct number of miles of undersea cables, we refer to factual knowledge about undersea cable infrastructure. The actual length of undersea cables is known to be over 750,000 miles. Among the given options, 75 and 75,000 are too small to represent the extensive network of undersea cables, while 750,000 aligns with the known scale of this infrastructure.

Answer:

750,000 (the option with "750,000" as the text)