Children with which attachment style tend to be more persistent and enthusiastic in challenging situations?

For a scientific claim to be meaningful, it must be capable of being disproven. This is the critical thinking principle of _____

Fill in the blank with correct word

College students faced with unsolvable problems eventually give up and make only half hearted attempts to solve new problems, even when the new problems can be solved easily. This behavior is probably due to ______

a) learned helplessness b) contingency blocking c) latent learning d) response generalization