Answer
None of these are reasonable for a “rather ordinary” middle-aged man.
Work Step by Step
a. A mass of 200 kg corresponds to a weight of about 440 lb.
b. 200 m is about the length of 2 American football fields.
c. 200 cm is almost 6.6 feet of height, hardly “ordinary”.
d. 200 mm is less than a foot, which is much too short.
e. 200 months is less than 17 years old, but the man is middle-aged.
