How did access to oceans and rivers the progress of industrialization in britain? a.
it allowed the unemployed to migrate to other countries with better economic opportunities.
b.
it provided quicker migration of people from rural areas to cities, where industries were located.
c.
it provided for quicker transport of manufactured goods, which strengthened trade.
d.
it motivated investors to invest in british industries that depended on rivers and seas.

The access to oceans and rivers provided for quicker transport of manufactured goods, which strengthened trade.  

Explanation:

The role of river and sea played a major role in Britain’s industrialization by strengthening the transport method of goods.  Through the three major water transport method in Britain, i.e. - the sea, the river and the coast the water trading became more fast.

After the revolution in late 18th century the Britain ports expanded and redeveloped with large ships for trading. Moving goods through coastal way was inexpensive and enhanced the iron, grain and many more early industries.

By dredging the river and widening its way Britain used river largely for trading.

i would go with the last one