The answer is a.) sound.
Because every homeroom has more girls than boys ,it makes sense that there are more girls than boys in the school.
Professional writing can be defined as business writing, media writing,
and writing that takes place in or for the workplace. Personal writing
is considered writing for any other purpose oriented toward the
individual writer’s needs. Advice available on writing dissects the
writer’s capabilities to put words out effectively styled for clarity
through such items as vocabulary choices and tone of voice, but style
issues do not separate professional writing from personal writing.
Professional writing and personal writing differs in intention,
composition, and exposition.