A) The source is probably not valid because it is based on an opinion.
He or she that wrote it did not go into a lab and see if the resources are true its just based on what he thinks it is.
C value I think that is it
Babies who are exposed to two languages start with
______ vocabularies but will become fluent in both languages and have higher test scores than those in first-language programs.
Answer : mixing
Perforated <span>type of tray allows impression material to mechanically lock on.</span>
