Out of the five sentences, only 4 appears as an opening sentence. The others are either abrupt have pronouns that need introduction. Statement 4 opens the para by introducing the three suffix. Since the author says they were symbols, he goes further and explains what exactly these symbols meant, something that is done in statement 1 . Thus 4 and 1 form a pair. Statement 5 adds on one more piece of information by mentioning that to gain the suffix (here we have three suffix) was some sort of pride in an age of technology. Statement 3 extends this idea by stating how these morphemes (symbols or suffix) were painted on to the names of scientific technologies. Thus we have 4153 forming a coherent paragraph. Statement 2 is the odd one out. The para speaks about technology, while statement 2 mentions modernism, which is not gelling with any of the other statements.