Which one of the following statements best reflects the idea behind the "Fractional Orbital Bombardment System" often talked about in media ?

The correct option is (c).

Explanation

The Fractional Orbital Bombardment System (FOBS) is a warhead delivery system that launches a payload into a Low Earth Orbit (LEO). Unlike traditional Intercontinental Ballistic Missiles (ICBMs) that follow a high, predictable parabolic arc, a FOBS places the warhead into a stable orbit. The system then utilizes a retrograde engine burn to "deorbit" the payload onto a target before it completes a full revolution around the Earth.

Analysis of Options

• Option (a) is incorrect: This describes a planetary defense system, such as NASA's DART mission, designed to deflect asteroids.
• Option (b) is incorrect: This describes standard interplanetary mission profiles involving orbital insertion and landing.
• Option (c) is correct: This statement accurately reflects the operational principle of FOBS. By entering orbit, the missile has an unlimited range and can approach targets from unexpected trajectories (e.g., over the South Pole), thereby evading early warning radars traditionally oriented toward the North Pole.
• Option (d) is incorrect: This describes comet rendezvous missions, such as the European Space Agency's Rosetta mission.

Key Takeaway:
FOBS distinguishes itself from ICBMs by using a low-altitude orbital path to bypass radar detection and range limitations, deorbiting the warhead over the target before completing a full circuit of the Earth.