Ascientist is taking measurements to see at which altitudes different types of clouds form. her measurements are shown in the data table below:

cloud type altitude (km)
cirrus 7.142
cirrostratus 6.908
altocumulus 4.083
stratus 3.816

what is the largest place value to which the scientist can round her data values without significantly altering the level of accuracy in her results?

a.
nearest tenth of a kilometer
b.
nearest hundredth of a kilometer
c.
nearest ten kilometers
d.
nearest kilometer