Few flat parts have a rectangular prism

Which strategy is used by public health to reduce the incidence of food poisoning?

Ithink i know it but i want to be sure so can you me out ?

Currently, the largest cruise ship has a tonnage of 225,282 gross tons (gt). which of the following is a reasonable estimate for the tonnage of this cruise ship? a. 2 × 10^5 gt b. 2 × 10^6 gt c. 2 × 10^-5 gt d. 2 × 10^-6 gt