Reading Comprehension — Passage 1
Questions 11–15 are based on the passage below.
For much of the twentieth century, archaeologists studying the Indus Valley Civilization faced an unusual obstacle: unlike its contemporaries in Mesopotamia and Egypt, the Indus script has never been deciphered. Thousands of short inscriptions survive, mostly on small stone seals, but none exceeds roughly twenty-six symbols in length, and no bilingual text analogous to the Rosetta Stone has ever surfaced to provide a key. Some researchers have proposed that the symbols do not encode a spoken language at all, but rather served as religious or political emblems, similar to a coat of arms. This view remains a minority position, however, since statistical analysis of symbol sequences shows patterns consistent with linguistic structure, including sign repetition and positional regularities that would be unusual in a purely symbolic system. Without a longer text or a bilingual key, though, competing decipherment claims — several of which assert links to Dravidian, Indo-Aryan, or even Sumerian languages — remain impossible to verify conclusively, and the debate continues to divide specialists.