Answer:
A.
Explanation:
We can round off the values for estimation.
29,354 can be rounded off to 30,000, which is
![3 * 1 {0}^(4)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/zdaxhxdfjez69jeotya3jdx0pznoo2bzr6.png)
Similarly, 6,156,782,221 can be rounded off to 6,000,000,000 which is
![6 * 1 {0}^(9)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/2xqq2wimztuuf7eyw0dl3fkzuhrqdifvf2.png)
Now we divide these two terms.
![(6 * 1 {0}^(9) ) / (3 * 1 {0}^(4) )](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ecf965788o99sq55v49lffrf5y64xr8itp.png)
![6 / 3 = 2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/4vnlu7mx5txc6zplt8akv985kfo9ibhsvp.png)
so it cannot be options B or D.
![1 {0}^(9) / 1 {0}^(4) = 1 {0}^(5)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/9g5s322t76hvrtb44igq5615kzrz4lez6z.png)
Hence, by estimation, it is
![2 * 1 {0}^(5)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/y7avg4fozf4g0gr5nwnfknw3prm4ldf57o.png)
times more.