Solvent extraction is a method for separating a substance from a solution or mixture by using a solvent in which it is more soluble.
A. True
B. False

Hint: We know that the extraction is that separation process in which the chemicals are separated out from the given mixture. It is also used to remove the impurities from the solution by using several methods of extractions.

Complete step by step answer:
As we all know, solvent extraction is also famous as liquid-liquid extraction. It is one of the methods that is generally utilized to separate substances from the aqueous solution or mixture through the solvent in which these substances are more soluble. In most of the cases, the chemical species is extracted, which is present in any state that is solid, liquid, or gas. It is dissolved in the given liquid solution, together with other chemical substances, and one of the liquid solvents is useful for this extraction process.
Thus, the given statement that is “Solvent extraction is a method for separating a substance from a solution or mixture by using a solvent in which it is more soluble” is definitely true.

Therefore, the correct choice for this given question is A that is true.

Note:
The most suitable solvent which is used for liquid extraction is ethanol, acetone, and methanol. The ethanol works as the best solvent in the extraction of chemical polyphenol, and this was given in the conditions of constipation.