1.She likes hunting, swimming, and fishing. Parallelism

2.Karen’s wide interests in international development and education prove that she is a good person. Subject-verb agreement

3.Everyone in the factory is throwing his or her shoes into the machinery. Lack of agreement— Pronoun antecedent

4.When the demand dies down… Dependent clause or sentence fragment

5.We easily took control of the factory; the owner left in a hurry. Comma splice

6.The manager argued for more person-hours during the week of convocation. Gender bias

7.This is a flower that I have always had difficulty growing in my garden. Relative pronoun (that) for essential information

8.Kyan received the test results on Friday, but he didn’t share them with his colleagues until Monday. Comma missing before conjunction

9.Julie felt like exercising yesterday, so she put on her bathing suit and drove to the YWCA, where she swam so far that only an extra-large pepperoni pizza would satisfy her hunger. Irregular verb

10.The professor explained the exercise to the students. Passive voice