Determines arthur's success at pulling the sword, excalibur, from its stone.   a. antecedent   b. precept   c. predestination   d. premonition

b. they require a huge investment of time, dedication ,training, and patience almost from the day they are born.

explanation:

the sentence gives a clear evidence of how carefully the sar dogs are selected and also specify from what time this exercise begins."almost from the day they are are born." this sentence shows as that this exercise begins early.

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i believe that dan is so anxious because he dose not know what awaits him when he gets there. but i dont know to be honest