Answer:
D.1.200 g
Step-by-step explanation:
We are given that unknown sample
We have to find the mass of unknown sample by reading the scales of given balance.
On first scale , reading=0 g
On second scale, reading=1g
On third scale, reading=0.2 g
Total mass=0+1+0.2=1.2 g
1.2 g can be written as 1.200 g because after decimal point when we write zeroes then it does not effect value of given number.
Hence, option D is true.
