In the Following Examples, Which One Demonstrates the Appropriate Syntactic

In the following examples, which one demonstrates the appropriate syntactic and semantic design considerations for data input?

A) using medical jargon in a form for patients
B) giving overlapped age ranges for user to choose from without explanation for these ranges
C) giving users great flexibility in entering date with no predefined restriction on date format
D) indicating that a field for spouse name is empty if a user checks "married" in marital status but misses the "spouse name" field;
E) arranging data items with space between them as little as possible, so that more items can be included in one page.