Question

choose the transition that contrasts, or shows differences.
laura ingalls wilder finished her first book, pioneer girl, in 1930. ____, no one wanted to publish it. fortunately, her next book, little house in the big woods, was more popular.
therefore
however

Explanation:

The sentence describes that Laura finished her first book but no one wanted to publish it, and then her next book was more popular. The word "However" is used to show a contrast between the situation of her first book (no one wanted to publish) and her next book (more popular). "Therefore" is used for cause - effect relationships, which does not fit here as there is a contrast, not a cause - effect.

Answer:

However