Replace the bracketed word with one of the given options, which suitably replaces the word without changing the meaning of the sentence.
A successful outcome could ultimately lead to its use in (autonomous) planetary rovers and robot aircraft.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. independent.
Independent is an appropriate synonym for "autonomous" in this situation since it denotes functioning or operation without direct control or involvement from others. The concept that planes and rovers can function independently is conveyed.
Compared to other options:
Unanimous: It refers to the total agreement, which is inappropriate for discussing the capabilities of rovers and aeroplanes.
Occlude: It refers to blocking or obstructing; it has nothing to do with autonomy or self-operation.
Obstruct: It refers to hinder or obstruct, which is inappropriate when discussing the capabilities of rovers and aeroplanes.