Selective means choosing carefully rather than taking everything. Some in, most out.
It is a compliment about standards, so a selective school or a selective process takes only some applicants. It is a criticism about honesty, since selective quoting and a selective memory both mean choosing the convenient parts, and that use is very common in argument. Biology has selective breeding, which is deliberate choice over generations. The verb is select and the noun selection covers both the act and what was chosen.