CR HELP:Online CB Ptest 4 Section 8#18

<p>If anybody has the online college board program, I am so stumped by this passage and this question in general. I don't really get the litteral meaning of some of the sentences.
Can sombody explain #18; I read CB's explanations and I still don't get it. I don't see where memories come in. The explanations point to Children's ability to attend to minor differences, seek a systematic basis for teh difference, and dichotomizing time into past and nonpast. They claim that these three things count as the correct answer: combinging rules and memories during language development.</p>

<p>I picked answer choice D. because I was mad confused and the passage included a very wierd sentence taht I guess I didnt understand the literal meaning of.
"They must have a built-in tendency to block the rule when a competing form(like bled) is found in memory, because there is no way they could learn the blocking principle in the absence of usable feedback form their parents."</p>

<p>Here's my interpretation of this sentence: Children must naturally block the rule when they remember an exception because they can't learn to do this without help from their parents. </p>

<p>However, CB once again explains that this choice is wrong because children can't learn to block the rule without feedback from parents so the paragraph is not referring to methods children use without adult feedback. This sentence is maddd confusing: how can the children have the rule "built-in" and know it naturally if it is impossible to learn the rule without feedback from their parents. </p>

<p>Somebody help me out here lol</p>