while Dan was blank after the accident, many people questioned if he was truly remorseful (what word gose in the blank contrite sorrowful or apologetic)

Apologetic

Explanation:

one of the central themes of edward abbey's work has been his staunch opposition to the glen canyon dam on the colorado river that created lake powell, destroying stunning scenery and wildlife habitat, endangering many rare species of fish and animals, and also irreparably destroying many important archaeological sites which provided information about the early inhabitants of the united states.