Just fix your --where option. It should be a valid SQL WHERE clause, like:
--where
--where="date_pulled='2011-05-23'"
You have the column name outside of the quotes.
You need to quote the "where" clause.
Try
mysqldump --opt --user=username --password=password lmhprogram myResumes --where="date_pulled='2011-05-23'" > test.sql
Use this code for specific table rows, using LIKE condition.
mysqldump -u root -p sel_db_server case_today --where="date_created LIKE '%2018%'" > few_rows_dump.sql