Which of the following sentences can be revised to eliminate redundancies?
our group had a keen advantage over theirs because we've all studied physics.
juan was costumed in disguise when he entered the room.
working in this company can be quite an interesting challenge.
the foundation of the house was starting to crumble under pressure.

The second sentence can be revised to eliminate redundancies. A sentence is a series of words which is made to provide information for a reader or a speaking partner. A redundant situation occurs in a sentence that has a wasteful or useless word to provide information. In the second sentence above, there are two words which give the same meaning that make the other word become useless. Costumed and disguise in the second sentence give the same meaning.