Answer with explanation:
Length of an object
cm
Other unit of measurement are Meter and Kilometer.
→1 Meter = 100 cm
→1 Kilometer= 1,000 meter=100,000 cm
→→21,000 cm = 210 meter = 0.21 Km
Option B:→ length of a city park, is most suitable measurement ,among all other measurement ,that Brad has done.
Second option Might be: Option A→ Length of a city block , may be That Brad has measured.
All other options are Inappropriate, as they require smaller scale or may be larger Scale ,that brad has used to measure
1.≡ Height of a person →→→240 cm (Maximum of 8 feet)
2. ≡Distance across a city →→→1 Km or 2 Km or 3 Km...
3. ≡Height of an apple tree→→→1,000 cm (Maximum)
4. ≡Width of a screen in a theater→→→2,100 cm (Maximum)
5 ≡depth of water in a swimming pool→→→225 cm
None of the five things described above appears, that brad has measured.