The correct answer is meiosis. Meiosis is a process where a cell divides into two where these cells contain half of the genetic information from the original cell. Meiosis produces daughter cells containing 50% information from the mother and 50% from the father.
When a stable atom gains or loses its electrons then that’s when it becomes the ion.
Wave speed = frequency x wavelength
= 100 x 0.3
= 30 m/s.
Hope this helps!
Answer for this question might be number 2