Based on the Findings of Spelke and Her Colleagues, Under

Multiple Choice

Based on the findings of Spelke and her colleagues, under which of the following conditions are 4-month-old infants most likely to conclude that the obstructed object is a single continuous object rather than two objects?

A) A long rod, partly hidden by a block, moves up and down.
B) A block, partly hiding a rod, moves up and down.
C) A rod is partly hidden by a block, and both remain stationary.
D) A bar moves out in front of a sphere it had partially blocked.