Answer: Option 'd' is correct.
Step-by-step explanation:
Since we have given that
[tex]48s^5t^3u^2\ and\ 40s^3tu^4[/tex]
We need to find the greatest common factor of the above terms:
[tex]48s^5t^3u^2=2\times 2\times 2\times 2\times 3\times s^5\times t^3\times u^2\\\\And,\\\\40s^3tu^4=2\times 2\times 2\times s^5\times t\times u^4\\\\Greatest\ common\ factor=2^3\times s^3\times t\times u^2=8s^3tu^2[/tex]
Hence, Option 'd' is correct.