Jesse SWIM across, Does that sound right? NO! So cancel that word out of the selection and we are left with.. Jesse SWUM across and Jesse SWAM across. I would go with SWUM, because swam sounds more like a present kind of thing, and they are talking about last summer. So He SWUM.
D is correct. There is fish in the water which provides lots of food. Boats can go up or down the river to transport items. Water is a basic need for humans so for a population to grow you need a good water source. Hope this helps! ;)
