<h2>
Electric field at the location of the charge is 169.97 N/C</h2>
Explanation:
Electric field is the ratio of force and charge.
Force, F = 6 x 10⁻⁶ N
Charge, q = 3.53 x 10⁻⁸ C
We have

Electric field at the location of the charge is 169.97 N/C
The answer to your question is 5:7
I think its Mercury because it's the closest to the sun.
Of the materials listed wood is the best insulator. It would be the least hot if exposed to similar temperatures.