Line plot titled, Length of Hyacinth Bulbs. The line is labeled, Length in inches. There is a number line from 6 to 10 partitioned into thirds. There is one mark above six and one-third. There are two marks above six and two-thirds. There is one mark above seven and one-third. There are three marks above seven and two-thirds. There is one mark above eight and one-third. There is one mark above eight and two-thirds. There are two marks above nine and one-third. There is one mark above 10.

What is the difference in length between the longest and shortest bulb?

4 inches
three and two-thirds inches
three and one-third inches
3 inches