In this Part, all practicable steps, in relation to the achievement of any particular result by a person, means all steps to achieve that result that it is reasonably practicable to take in the circumstances, taking into account and weighing up all relevant matters, including—
(a)
the nature and severity of the harm that may be suffered if the result is not achieved; and
(b)
the current state of knowledge about the likelihood that harm of that nature and severity will be suffered if the result is not achieved; and
(c)
the current state of knowledge about harm of that nature; and
(d)
the current state of knowledge about the means available to achieve the result, and about the likely efficacy of each; and
(f)
their affordability, in light of the person’s financial position.