The answer to this question is DNA replicates by a template mechanism or should have a replication machine. Watson and Crick suggested that all organisms must reproduce their DNA with exceptional correctness before each cell division.
There is many reason, one way they could've been worried about is if the
new settlers would make war or take their land and food.
Another way is that they could've cause the Mexican to come of their land.
Hope it helped
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I would have to say C. Though take that answer with a grain of salt.
At state level should be endorsing legislation or a new law like no guns