Betelgeuse, as a red supergiant star, is capable of creating heavier elements through the process of nuclear fusion during its lifecycle. Among the options listed, Silicon (Si) is a heavier element that could be created by Betelgeuse.
Hydrogen, helium, and lithium are lighter elements that are primarily formed during the Big Bang nucleosynthesis or in smaller stars, not typically in the core of a red supergiant like Betelgeuse.
So, the correct answer is: Silicon (Si).