Respuesta :
Answer:
B
Explanation:
Its nucleus is identical to an alpha particle, and consists of two protons and two neutrons. Alpha decay of heavy elements in the Earth's crust is the source of most naturally occurring helium-4 on Earth, produced after the planet cooled and solidified.
Answer: B. An Alpha particles
As helium is consist of 2 protons and 2 neutrons
Alpha particles, also consist of 2 protons and 2 neutrons bound together into a particle that's why identical to a helium-4 nucleus.
