How was the physical environment changed by the development of the Transcontinental Railroad? OA. Rivers changed course because of flooding.
OB. Snow was unable to accumulate because of tracks.
OC. Grass lands were more susceptible to erosion
OD. Parts of mountains were destroyed for tracks.

2: "jesse kept on, his voice rising in anger."

4: "andy stormed out angrily."

i answered the question and it said these two were right : )

i hope this

how is the underlined gerund phrase used in the sentence?  

josh's plan, rushing the passer, seemed sound to us.

a.

object of a preposition

b.

direct object

c.

appositive

d.

subject