The letter A) contains two ideas joined by although, which is a conjoining word
The word that is an example of comparative degree adjective is louder. The comparative degree adjective shows that there are two objects that are in comparison while the superlative is when there are three or more items being compared.
Hello. You did not show the text to which this question refers, which makes it impossible for me to show you the words that should be emphasized when read aloud.
However, these words can be perceived as they are usually written in italics, or bold. Anyway, these words have a differentiation from the rest of the text, reinforcing that they must be read and differently, with more emphasis, with a stronger tone.