Which European country(ies) has (have) a history of establishing dental hygiene outside of the United States?

Any agent that can cause death or serious bodily harm, in relatively small amounts, is known as which of the following?

A. Phenol B. Antidote C. Poison D. Toxin

The Roman numeral XLVII =

a. 43. b. 47. c. 52. d. 63.