Answer:

sex

AnswerCrossword Clue
SEXCensus info
SEXHealth class subject
SEXSome census info
SEXSubject for Kinsey
SEXPossible reason for an R rating
SEXSame-... marriage
SEXSubtext of many an innuendo
SEXWord before sells or cells
SEXBox on a questionnaire
SEXSee 111-Down
SEXOne cause for an R rating
SEXDetermination in a prenatal exam
SEXCongress
SEXSee 30-Across
SEXCensus datum
SEXX factor?
SEX... ed
SEXBirth certificate datum
SEXCensus information
SEXPrurient interest
SEXDriver's license datum
SEXDriver's license info
SEXNumber between quinque and septem
SEXKinsey topic
SEXSubject of many a political scandal
SEXApplication datum
SEXMasters focus
SEXCause for a TV-MA rating
SEXSurvey check-off
SEXV-chip target
SEXCause for an R rating
SEXReason for an R rating
SEXGender
SEXQuestionnaire info
SEX... Ed
SEXTopic for Dr. Ruth
SEXReason for a 98-Across
SEXBox to check on a form
SEXCensus category
SEXBook by Madonna