jq: print only specific keys and values in order
With your input, the filter
( {c}, {a} )| to_entries[]| "\(.key) \(.value)"produces the desired output (you will probably want to use the -r command-line option).
If the ordering of keys you want is specified by an array,$a, then you could write:
. as $in| $a[]| "\(.) \($in[.])"Etc.