The answer is:
<u><em>A) Methane</em></u>
because if u picked anything else the reaction would not happen
The could have snuck away on a ship, as they are very sneaky
When excess aromatic aldehyde( acetone) reacts with another element such as chlorine trichloroacetone is formed.
<h3>What is aromatic aldehyde?</h3>
Aromatic aldehyde is defined as the chemical compound that contains the functional group CHO, such as benzaldehyde and acetone, which has an almond-like odour profile.
When excess aromatic aldehyde( acetone) reacts with another element such as chlorine, trichloroacetone is formed.
Learn more about acetone here:
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The root word cyto means "cell".