Step-by-step explanation:
We need to select the right units for each object.
Part (a)
If we say that the bus had a mass of 8000 grams, this is equivalent to a mass of 8 kg and an adult had a mass of 60 kg, so the bus should have a mass of 8000 kilograms.
Part (b)
The reasonable measure for a pencil is 18 centimeters because millimeters are too small, and meters and kilometers are too much for a pencil.
Part (c)
Since it is a cup of coffee, the correct amount for the cram should be 5 milliliters.
Therefore, the answers are
(a) kilograms
(b) centimeters
(c) millilites.