Which of the following is a complete sentence? a.) known as the land of the midnight sun. b.) three quarters of the distance from the equator to the north pole. c.) in the summer, the sun never sets. d.) in the arctic, twenty-four hour winter nights.

onto a large boat, and mark the water level that the boat sinks to. then, take the elephant out and put a bunch of marked weights onto the boat until it reaches the same water level. add up the masses of the weights to get the weight of the elephant.

a. inform

explanation:

"how to" tells us that it will explain how to, which means to inform