Here is the answer:
Sorry, I don't understand. What you posted looks like the source of the question, not the answer. Please explain what you mean.
In Exodus 9:18-19 God is warning about what He is about to do:
Behold, to morrow about this time I will cause it to rain a very grievous hail, such as hath not been in Egypt since the foundation thereof even until now. Send therefore now, and gather thy cattle, and all that thou hast in the field; for upon every man and beast which shall be found in the field, and shall not be brought home, the hail shall come down upon them, and they shall die. (Exodus 9:18-19)
In Exodus 9:20-21 we see that those who heeded the warning (both Israelite and Egyptians) didn't leave their live stocks out in the field.
He that feared the word of the LORD among the servants of Pharaoh made his servants and his cattle flee into the houses: And he that regarded not the word of the LORD left his servants and his cattle in the field. (Exodus 9:21)