None of the options listed (the airplane, vaccines, mosquito nets, or the rocket ship) directly resulted from the invention of the first computer. The first computers were primarily used for calculations and data processing, and while they have had a significant impact on a multitude of fields, including aviation, healthcare, and space exploration, none of those specific inventions were direct results of early computing technology.
If you're looking for a direct descendant in technology or developments specifically related to computers, consider developments like software applications, data processing techniques, or advancements in information technology.