The correct answer is B. 4 to 3, 4 : 3, 4/3.
Here's why:
- 4 to 3 indicates that for every 4 electronic devices, there are 3 people.
- 4 : 3 is the ratio format, again showing the same relationship.
- 4/3 represents the ratio as a fraction, which is equivalent to "for every 4 devices, there are 3 people."
The other options contain inaccuracies regarding the representation of the ratio.