Answer:
The answer to your question is: Letter C
Step-by-step explanation:
Europium is an element with the chemical symbol Eu and atomic number 63. Some physical and chemical properties of Europium are: is a soft metal that can be cut with a knife and reacts easily with oxygen. Its name is due to the continent Europe.
Europium is an inner transition metal but this is not the most specific classification of this element. Inner transition metals are classified as lanthanides and actinides and Europium belongs to the first group (lanthanides).