Answer:
Because Leonard was the only person outside walking at night.
Explanation:
The sentence doesn't form a complete thought, it starts with because but doesn't have a reason.
I think it should not Have bad grammar
Answer:
is that our brains are not finished maturing by adolescence, as was previously thought. Adolescent brains "are only about 80 percent of the way to maturity," she said at the annual meeting of the Society for Neuroscience in November. It takes until the mid-20s, and possibly later, for a brain to become fully developed.
Explanation: