Answer:
Chorus.
Step-by-step explanation:
William Shakespeare's "Romeo and Juliet" revolves around the tragic love story of two young lovers. The story deals with themes of love, family, loyalty, patriarchy, death, etc.
The given lines "from forth fatal loins of these two foes, A pair of star-crossed lovers take their life" are taken from the Prologue of the story. Said by the Chorus as a prologue, the lines talk of how the "two foes"- the Montagues and the Capulets will produce two "star-crossed lovers". And because of that enmity between their families, they will take their life.
Thus, the correct answer is the Chorus.