Select the most appropriate option to fill in the blank and make a grammatically correct sentence.

In the age of technology, sending letters by postal mail seems __________ to me.

superfluous

The most appropriate option to fill in the blank is superfluous.

The word "superfluous" means "unnecessary or excessive." In the age of technology, there are many other ways to communicate with people, such as email, text messaging, and social media. So, sending letters by postal mail seems unnecessary or excessive.

The other options are not as appropriate.

• Superstition means a belief in something that is not based on reason or evidence. This does not make sense in the context of the sentence, because there is no reason to believe that sending letters by postal mail is superstitious.
• Surplus means an excess of something. This does not make sense in the context of the sentence, because sending letters by postal mail is not an excess of anything.
• Supercilious means arrogant or condescending. This does not make sense in the context of the sentence, because there is no reason to be arrogant or condescending about sending letters by postal mail.