Final answer:
In the story 'The Summer of the Beautiful White Horse' from 'My Name is Aram,' the 'crazy streak' before Mourad was Aram's great-grandfather, highlighting a family trait of being unconventional or 'crazy.'
Step-by-step explanation:
The "crazy streak" before Mourad is referred to in William Saroyan's short story "The Summer of the Beautiful White Horse" from the collection My Name is Aram. This question is asking about a character trait that has been passed down in Aram's family. The answer to the question, "Who was the crazy streak before Mourad?" is a) Aram's great-grandfather. The story illustrates the family trait of being somewhat unconventional or 'crazy' as a charming aspect of their character. Mourad, admired by Aram for his boldness and spirit, inherited this "crazy streak" from their shared great-grandfather.