Look at the picture on top! i really really need for this! i have no idea how to even start and this is graded! in advance

But we pulled at the grill [on the ground] and it gave way. and then we saw iron rings as steps leading down a shaft into a darkness without bottom. … it was a great tunnel. its walls were hard and smooth to the touch; it felt like stone, but it was not stone. on the ground there were long thin tracks of iron, but it was not iron; it felt smooth and cold as glass. we knelt, and we crawled forward, our hand groping along the iron line to see where it would lead. but there was an unbroken night ahead. what is the most likely explanation for the walls described in the bold text?

Missus a. having been sent b. going to send c. having sent d. sending

Lorek lives near the north pole. the snow in his backyard adds water to the atmosphere through )transpiration )evaporation )sublimation )condensation