Which pair of answers best fill in the blanks in this chart?

Question 6 options:

Eli Whitney/Telegraph


Alexander Bell/Mechanical reaper


John Deere/Telephone


Cyrus McCormick/Steam Engine

Which pair of answers best fill in the blanks in this chart Question 6 options Eli WhitneyTelegraph Alexander BellMechanical reaper John DeereTelephone Cyrus Mc class=