The phrase "best option" means the choice or decision that is most beneficial or suitable in a particular situation. It refers to the option that is considered superior or most favorable among the available options. Full definition
And in this year, with so many incredible female performances, there's a laundry list of better options for Best Actress than her. (alphaprimitive.com)
Such gratitude is not best option if you are dealing directly with the client. (lawyerist.com)
There are a handful of good options for families. (farflunglands.com)