问题咨询——explore&seek???

gubinlaile

Some theorists view children as passive receivers of experience; others consider them active in organizing, structuring, and in some sense, creating their worlds. A scientist who considers children to be passive does not think they are unresponsive, just that they enter the world ready to absorb whatever knowledge is provided by internal needs over which they have little control. Theorists and educators who view the child as essentially passive often favor direct and carefully structured teaching methods. For example, some methods for teaching children to play the piano contain a series of specific steps, chords, and tunes to be learned in a prescribed order. The child must master each step before proceeding to the next one.
In contrast, an educator who believes that children are active assumes that they learn best when they ____ and select their own learning materials and tasks. When teaching a child to play the piano, such an instructor might encourage the child to make up tunes or to select among different exercise.
问题：
A、        explore
B、        discover
C、        develop
D、        seek
选什么？