ECT is commonlyknown as

Which of the following is a TRUE statement regarding a child engaged in associative play?

A) The child plays alone, but with toys just like the children around him. B) The child plays among other children, but his play is not coordinated with theirs. C) The child watches other children play and asks many questions about their toys. D) The child plays with other children, integrating his play with theirs.

Given that theories can not be proved nor disproved by the results of a research study, how does scientific knowledge advance?

a. it doesn't b. on the basis of null findings c. on the basis of accumulated evidence over many studies d. through logic e. through experimentation