Between the late 1800s and early 1900s, immigration to Washington slightly declined.
sharply increased.
stopped completely.
increased slightly.,,,

Well it increased

Explanation:

"Washington remains today a state where most residents came from somewhere else, either another state or another country. Occupied by the United States in the 1840s, it's population grew slowly until statehood in 1889, then surged after the discovery of gold in Alaska and the Yukon in 1896. In the 20th century, wars brought rapid population growth as military bases, shipyards, and aircraft manufacturing transformed the economy of Puget Sound. The population passed 2 million in the 1940s, 3 million in the 1960s, and 4 million by 1980. Growth slowed a bit during that decade but since 1990 the population grows by about 100,000 each year, 1 million each decade, reaching 7.4 million in 2017.

Something I got from the internet

c) women should home the rights as men.