If farmers on the great plains had practiced crop rotation in the late 1800s and early 1900s, the soil could have recovered its nutrients. the dust bowl would not have existed. the wheat crop could have protected against winds. the dry-farming strategies would have failed.

Read the summary of the first three paragraphs of “the world on turtle’s back.”[1] in the beginning, there was no land, only the great ocean. [2] the sky-world, the home of the gods, was above the ocean. [3] a sacred tree stood at the center. [4] one of the gods pulled out some of its roots for his pregnant wife. [5] this created a hole in the floor of the sky-world. [6] the man's wife fell through the hole toward the ocean below, clutching the roots in her hand.which is the best way to combine sentences 4 and 5? a) one of the gods pulled out some of its roots for his pregnant wife, which created a hole in the floor of the sky-world.b) one of the gods pulled out some of its roots for his pregnant wife, he created a hole in the floor of the sky-world.c) one of the gods pulled out some of its roots for his pregnant wife which created a hole in the floor of the sky-world.d) one of the gods pulled out some of its roots for his pregnant wife he created a hole in the floor of the sky-world.