Answer:
The amount of potassium chloride that can dissolve in water increases by 0.3 grams for every 1 degree Celsius increase in temperature.
Explanation:
Given

Required
Interpret 0.3
We make use of the following illustration to answer this question.
Let C = 1

Let C =2

Let C = 3

Notice that when the values of C increases by 1(i.e. from 1 to 2 and 2 to 3), the values of A increases by 0.3
i.e.

Hence, option D is true
Natural gas is comprised of methane with small amounts of ethane,propane,butane and pentane.
The simpler molecular structure of natural gas enables a clean burn, so it's combustion does not produce solid particles or sulpher. It is used for heating,cooking,electricity generation and fuel for some cars.
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