Which two sentences taken together provide the BEST evidence to support the idea that black holes are difficult to locate? Read the following sentences from the article. 1. This black hole is about 1,000 light-years away and each light-year is 5. 9 trillion miles (9. 5 trillion kilometers). 2. Astronomers theorize there are between 100 million and 1 billion of these small but dense objects in the Milky Way. 3. Usually, scientists can only spot them when they're gobbling up sections of a partner star or something else falling into them. 4. Astronomers think most black holes, including this newly discovered one, don't have anything close enough to swallow. Question 3 options: 1 and 2 1 and 4 2 and 3 3 and 4.