Correct option (c) 20 m
Explanation:
![](https://www.sarthaks.com/?qa=blob&qa_blobid=378337015469795132)
Body moves horizontally with constant initial velocity 3 m/s upto 4 seconds
∴ x = ut = 4 x 3 =12 m
and in perpendicular direction it moves under the effect of constant force with zero initial velocity upto 4 seconds.
![](https://www.sarthaks.com/?qa=blob&qa_blobid=9754862707182096858)