In Multipoint Geometric Correction, after you created five Ground Control Points (GCP) now you will see X
Residual, Y Residual and RMS Error information. You
will also see Control Point Error for (X) and (Y) and a
(Total) about your Ground Control Points (GCP) list.
What do these numbers represent?

The answer for your problem would be a. 7

The us is first  the  u.s. economy  remains the  largest in the world  in terms of nominal  gdp. however, the  u.s. economy  loses its spot as the number one  economy  to china when  measured  in terms of  gdp  based on ppp. in these terms, china's  gdp  is $23.19 trillion exceeds the  u.s. gdp  of $19.42 trillion

That is the correct answer to the question, why is the southern portion of the ring of fire so complex?