The chart indicates that the smallest increase in car ownership occurred between

1900 and 1920.

1930 and 1940.

1940 and 1950.

1920 and 1930.

1900 and 1920.

Explanation:

According to the given automobile ownership chart from the year 1900 to 1950 we can see that from the year 1900 to 1920 there is a smallest increased in car ownership and after that, there is a slightly increased from the year 1920 to the year 1950 that represents the bar graph shows an upward movement

Hence, the first option is correct