The correct answer among all the other choices is B. her; subject. This pronoun best completes the sentence "Is that her in line at the cash register?" Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
1) What happened
2)What is the subject
3)<span>What about the main character</span>
Because finding a new production would give opportunities for a business to grow and expand on what they have. Also, it can also let you explore the wonders and you may discover new things by finding new techniques. Hope this helps.