They see previous hints left around, like how fossils proved there were extinct animals on earth.
You didn't list the options to choose from but I found them elsewhere.
The answer is - couples in happy marriages make external attributions for negative behavior and internal attributions for positive behavior; while couples in unhappy marriages make internal attributions for negative behavior and external for positive. Happy couples blame outside forces for issues whereas unhappy couples blame each other.
Answer:
3. D
4. Cosmopolitan
7.Is a port city in France been a crossroad of immigration and trade
Answer:
In the early nineteenth century, political participation rose as states extended voting rights to all adult white men. During the 1820s, the Second Party system formed in the United States, pitting Jacksonian Democrats against Whigs.