How long should a couple have tried to conceive before being considered infertile?

Limited set of orders constructed to ensure each condition appears at each ordinal position and each condition precedes and follows each condition one time

What will be an ideal response?

Your housekeeper has an excellent ability to report details, but does not recognize emotions. She answers the door and says the following: "The person at the door has uplifted inner corners of the eyebrows, lowered upper eyelids,

and downturned lips." What would you do next? a) Invite the person in and ask what is wrong. b) Ask the person to share whatever is so surprising. c) Run out the back door as quickly as possible and call 911. d) Tell the person not to bring that foul smelling material into the house.