Answer:
The age of the tree in scientific notation form is [tex]3.212\times 10^{3}[/tex] .
Option (D) is correct .
Step-by-step explanation:
As given in the question
A tree is 3,212 years old.
Now write 3212 in the scientific notation form .
= 3212
Multiply and divided the above expression by 1000 .
[tex]= \frac{3212\times 1000}{1000}[/tex]
Simplify the above
[tex]= \frac{3.212}{1000}[/tex]
Thus it is written as
[tex]= 3.212\times 10^{3}[/tex]
Therefore the age of the tree in scientific notation form is [tex]3.212\times 10^{3}[/tex] .
Option (D) is correct .
