What is the best place for this sentence if it is added to the paragraph? read the paragraph and the sentence below it. 1enkidu, who had met the beast, warned gilgamesh of the dangers involved, explaining that gilgamesh did not "know the horror that lurks ahead.” 2upon seeing the beast humbaba, gilgamesh himself became seized with dread and terror. 3however, despite enkidu’s warning and his own temporary paralysis upon seeing humbaba, gilgamesh charged at humbaba with his axe. 4he demonstrated that he was able to summon the bravery necessary to overcome his fear and attack the frightening beast. sentence: in fact, gilgamesh was so frightened that "terror flooded / his muscles, his heart froze, his mouth went dry, / his legs shook,” and "his feet were rooted to the ground.”

The ANSWER is:

Between sentences 2 and 3

The best place for this sentence is between sentences 2 and 3. That is because of the connective used (in fact). This linking word is used to give more detail about what you have said, it is a discourse marker. What is more, it is generally placed in front position in a clause. However, in informal situations it can occur in final position.

You should place the sentence there because it specifies the terror felt by Gilgamesh.

Upon seeing the beast Humbaba, Gilgamesh himself became seized with dread and terror. In fact, Gilgamesh was so frightened that "terror flooded his muscles, his heart froze, his mouth went dry, his legs shook, and his feet were rooted to the ground".  

He was so frightened that terror flooded his muscles, his heart froze, his mouth went dry, his legs shook, and his feet were rooted to the ground.

is that the whole question?