Selecciona la opción correcta del menú desplegable para completar el texto.
Choose the correct meaning for the following words (choose the letter representing the correct answer before the word).
2) Molecule: ( ( A, B, C, D ) )
A. force (energy) that combines elements chemically.
B. substances that make up matters.
C. combination of different elements.
D. two or more atoms are combined and act as a single particle.