Concept:Use inversion with "so" to show the same action applies to another subject, making the sentence more concise and natural.
Explanation:The underlined phrase "her husband did so" is grammatically acceptable.
However, it can be improved for better flow and idiomatic correctness.
When the same verb applies to two subjects, we can use an inverted structure: "so + helping verb + subject."
Here, the verb is "enjoyed" and the helping verb for the past tense is "did."
Thus, the correct inverted form is "so did her husband."
This pattern avoids repeating the full verb phrase and sounds more natural in formal English.
For example: "She enjoyed the trip, and so did I."
Option B ("Her husband did so") is simply a repetition of the underlines part without improvement.
Option C ("Her husband neither did so") changes the meaning negatively.
Option D ("Neither her husband so") is grammatically incorrect.
Option E ("No improvement") is incorrect because "so did her husband" is more idiomatic.
Therefore, the best choice is Option A.
Answer:So did her husband (Option A)