Assertion: ${C_2}{H_5}OH$ is an Arrhenius base.
Reason: ${C_2}{H_5}OH$ donates its $O{H^ - }$ in aqueous solutions.
A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
C. Assertion is true but Reason is false.
D. Assertion is false but Reason is true.
E. Both Assertion and Reason are false.

Hint: There are majorly three types of acids and bases. They include Arrhenius acids and bases, Bronsted acids and bases and Lewis acids and bases. To solve this question, we should learn what work these acids and bases perform. Arrhenius acids are the ones which release hydrogen ions.

Complete step-by-step answer:
Arrhenius acids and bases: The compound which generates ${H^ + }$ ion in aqueous solution is called Arrhenius acid. The compound which generates $O{H^ - }$ ion concentration in aqueous solution is called Arrhenius base. Arrhenius' theory of acids and bases was given by Swedish chemist Svante Arrhenius in 1884.
${C_2}{H_5}OH$ is ethyl alcohol and it does not generate $O{H^ - }$ ions in aqueous solution. Hence it is not Arrhenius' base.

Additional note: Ethyl alcohol or ${C_2}{H_5}OH$ is an organic compound which is released during the anaerobic fermentation in yeast. It is a product of anaerobic respiration in yeast. Ethanol is a volatile organic compound. It is colorless liquid and also it is flammable. There is a slight characteristic odor of ethanol.

Both assertion and reason are false. Therefore, the correct option is option (E).

Note: Bronsted acids and bases: This theory was introduced by Johannes Nicklaus and Thomas Lowry in 1923. The Bronsted Lowry concept extends and a base is a proton acceptor.
Lewis acids and bases: Lewis acids and bases theory were given by Gilbert Lewis. This theory suggested that Lewis acid is a substance that accepts a pair of electrons and Lewis base is a substance that donates a pair of electrons. They form covalent bonds.