Robotic spacecraft have different levels of complexity, which contributes to overall cost. Which of the following types of missions are likely to be the cheapest? Robotic spacecraft have different levels of complexity, which contributes to overall cost. Which of the following types of missions are likely to be the cheapest? sample return missions flybys orbiters lander

Flybys.

Explanation:

Of the given options the cheapest type of mission of a robotic spacecraft is

Flybys.

Flybys are gravity assisted (they are accelerated by the force of gravity of Earth or the planet they are meant to orbit) and hence require less fuel. NASA's Juno Mission to Jupiter in 2011 was a flyby. The spacecraft is studying planets composition, gravity field, magnetic field, etc.