The given line graph shows the number of scooters manufactured (in thousands) by companies X and Z, over the years.

What is the approximate difference between the total production by companies X and Z in the given years?

The correct option is 192000.

From the given line graph, we can observe the production data (in thousands) for companies X and Z across the years from 2016 to 2021:

Company X (represented by the blue line with diamond markers):

2016: 128
2017: 110
2018: 102
2019: 80
2020: 109
2021: 170

Total production by Company X (in thousands):

$128+110+102+80+109+170=699$

Company Z (represented by the orange line with square markers):

2016: 141
2017: 192
2018: 145
2019: 130
2020: 122
2021: 161

Total production by Company Z (in thousands):

$141+192+145+130+122+161=891$

Now, calculate the difference between the total production of Company Z and Company X (in thousands):

$891-699=192$

Since the figures are given in thousands, the total difference in actual numbers is:

$192\times 1000=192000$