Michael's Free Online Sabbath Quiz:
Congratulations a sabbath rest was correct! Proof: rest meant sabbatismos which means a sabbath rest. (the New King James did not have a perfect translation.)
Your Final Question :
10) Who was the woman they met? Acts 16:13 And on the Sabbath day we went out of the city to the riverside, where prayer was customarily made; and we sat down and spoke to the women who met there. NKJV