I'm going to assume, because of the lack of a reproducible example, called a reprex, that
data is a data frame.
I can't tell if you want to include or exclude the fields in the
c function. I'l assume include.
If you haven't already
Then, to make data one
data1 <- data %>% select(id, hiredlabor, farmlabor, region)
to make sure that they are all there and all correctly spelled case-sensitively.
If your spreadsheet has multiple tabs, consult the documentation for
read_excel or export your sheet to
csv format and use
readr::read.csv to bring it into your workspace.
Please don't be discouraged; with experience, this will become second nature and the ease of manipulating data will more than make up for the initial hassle.