Answer:
C
Explanation:
c, in the event that
without this phrase the sentence is perfect, it's a redundant phrase.
With the gradient because the molecules are going from high to low concentrated areas
They are different types of heroes; Beowulf is a warrior, and Sir Gawain is a knight. ... Beowulf follows the heroic code which values strength, honor, and courage. Sir Gawain follows the code of chivalry and values being honest, humble, loyal, pious, and having integrity.
The immediate result was that over 650 000 people were given the rights of voting, and numerous city-states were given the status of separate parliamentary boroughs.