Answer: a. Failure is everywhere. It's just that most of the time we'd rather avoid confronting that fact.
Step-by-step explanation:
Oliver Burkeman believes that the way to true happiness is not to think so positively all the time that we forget about the negative parts of life. He believes the humans do this often even though they can see failure on the horizon, they still go ahead and do things with a hope that things will work out due to that unwarranted positivity.
He believes that failure is everywhere but people just want to avoid that fact because it is not something that they want to admit can happen.