Identify the sentence that contains an error in semicolon usage.
a. On their trip to Asia this fall, my parents will make stops in Seoul, South Korea; Jakarta, Indonesia; and Bangkok, Thailand.
b. My vegetable garden had a high yield this year therefore, I am canning tomatoes and peppers this weekend.
c. Bryan spent the weekend studying literature; his roommate crammed for a biology test.
d. Each spring the Botanica