Here's why:
* "And" is a conjunction: It's a word that joins words, phrases, or clauses.
* Third person uses pronouns like "he," "she," "it," or "they": These pronouns are completely compatible with conjunctions like "and."
Examples:
* "The cat sat on the mat and purred contentedly." (Subject: cat, third person singular)
* "The children played in the park and laughed merrily." (Subject: children, third person plural)
* "The dog wagged its tail and barked happily." (Subject: dog, third person singular)
So, don't be afraid to use "and" in your third-person writing. It's a perfectly natural and essential part of the English language!