Об­ра­зуй­те от слова VARY од­но­ко­рен­ное слово так, чтобы оно грам­ма­ти­че­ски и лек­си­че­ски со­от­вет­ство­ва­ло со­дер­жа­нию тек­ста.

Ivan Sechenov was an outstanding Russian scientist. He was born in 1829 in a noble family. His parents inspired young Ivan to continue his education throughout his entire life, and the boy followed their advice. At the age of 14 he chose to become a military engineer and studied __________________ technical subjects.