$13.$ Double section corners interior to a township exist due to

$($a$)$ dependent resurvey

$($b$)$ independent resurvey

$($c$)$ grants in the township

$($d$)$ meander lines

$14.$ Bearing breaks on east$-$west lines in record data normally exist at

$($a$)$ township line quarter corners

$($b$)$ section line quarter corners

$($c$)$ section corners interior to a township

$($d$)$ all of the above

$15.$ BLM$\text{'}$s Geographic Coordinate Data Base $($GCDB$)$ section corner coordinates

can be used to

$($a$)$ re$-$establish its location by proportioning

$($b$)$ to set a monument at that section corner location by GPS

$($c$)$ to search for evidence of the corner

$($d$)$ all of the above

$16.$ By the $1973$ Manual of Instructions a center of section is established by

$($a$)$ single proportion

$($b$)$ double proportion

$($c$)$ distance$-$distance intersection

$($d$)$ bearing$-$bearing intersection

$17.$ Cardinal equivalents refer to

$($a$)$ the error in the bearing in record information

$($b$)$ the error between grid and geodetic bearing

$($c$)$ distance components in latitude and longitude of record data

$($d$)$ the computational process in single proportioning

$18.$ A base line is

$($a$)$ run east$-$west from the initial point

$($b$)$ parallel to a guide meridian

$($c$)$ run north$-$south from the initial point

$($d$)$ composed of six mile segments from standard corner to closing corner

$19.$ A topographic call in original field notes

$($a$)$ can be considered as a form of monumentation

$($b$)$ serves no purpose in proportionate measurement

$($c$)$ is limited to only riparian rights

$($d$)$ none of the above

$20.$ Running random, correcting to true refers to

$($a$)$ original survey east$-$west section lines interior to a township

$($b$)$ original survey north$-$south section lines interior to a township

$($c$)$ north$-$south exteriors of townships

$($d$)$ east$-$west exteriors of townships$|$