Rearrange the parts of the sentence in correct order.
One element that
P. is timing, in particular ensuring that
Q. is essential to navigating deep space
R. the time on board spacecraft is synchronised
S. with the time on the ground
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → QPRS
One element that
Q. is essential to navigating deep space
P. is timing, in particular ensuring that
R. the time on board spacecraft is synchronised
S. with the time on the ground