I think it will be letter A tbh 
Hope this helps you out
        
             
        
        
        
The question in English is "<span>Determine the mass, in kg, of a material that is contained in a volume of 18L. It is known that the material density is 0.9 g/cm 3"
Answer: 
</span>
We can use a simple
equation to solve this problem. <span>
    d =
m/v</span><span>
<span>Where </span>d <span>is
the density, </span>m <span>is
the mass and </span>v is the volume.
d = </span>0.9<span> g/cm³
m = ?
v = </span>18 L = 18 x 10³ cm³<span>
By applying the equation,
<span>    0.9 g/cm³ = m / </span></span>18 x 10³ cm³<span>
             
    m = 0.9 g/cm³ x </span>18 x 10³ cm³<span> 
<span>             
    </span>m = 16200 g
                  m = 16.2 kg
Hence, the mass of
18 L of material is 16.2 kg.</span>
        
             
        
        
        
1. Solar nebula 2. The sun 3. Planetesimals 4. Inner planets, 5. Outer planets. 
I believe that’s it