However = but. (I wanted to play Tennis; however Irinia didn't want to) Furthermore = in addition to. (I wanted to play Tennis; furthermore Irinia wanted too)

Hi Irina, The two words have different functions. "However" is a conjunction used for contrast Example: A snowstorm was approaching the city. However, transportation services were still running at full capacity. while "Furthermore" is used to elaborate more on an earlier point. In your passage, an earlier sentence explained the inconvenience female shoppers faced as they had to bring along their own shopping basket. In the subsequent sentence, you elaborated on this inconvenience by describing how the size of their baskets restricted the quantity of their purchases. Based on this, "furthermore" is the word that should be used in the passage. Hope this helps. Cheers, Lance