~やむをえず  => unavoidable, no other way to do something N2
Necessity, obligation
にこたえ(て) => in response to ~ N2
むき => facing towards N3
Direction
むしろ => rather; instead N2
Compare
...はむりだ... => impossible N4
Description
込む => to be crowded N3
なくて済む/ないで済む => get by without doing ~ N2
ことこのうえない => the most of all; the best; nothing is ... N2
Emphasis on degree
~すむことではない => ~ is not enough to solve the problem; cannot be resolved by ~ N1
Emphasize the negative meaning
に[答「こた」]えて => In response to A N2
Reason, Result, Response
といえば…ぐらいのことだ => speaking of... just... N2
Respectful, humble
ずに済む => get by without doing ~ N2