Passive biasing vs. active biasing

Im checking out this FET type LNA IC (ATF-54143) that offers two different schemes of implementation (passive biasing and active biasing)

What is the difference between the two?
Is one scheme better than another in terms of providing gain, rf output?

Active bias will ensure that the DUT will have the rated current at all the temperatures.
Passive may deviate the bias which may not be acceptable to LNA case. Because LNA NF is depend on bias.