Option 1: (4*32+37)/37

This option is incorrect. It involves the calculation (4*32+37)/37, which gives a value of 4.75675675676, which does not represent the number of days it will take for all three to finish the work.

Option 2: 5

This option does not provide any calculation or explanation. It simply states that it will take 5 days for all three to finish the work.

Option 3: (5*1+37)/37

This option is incorrect. It involves the calculation (5*1+37)/37, which gives a value of 1.16216216216, which does not represent the number of days it will take for all three to finish the work.

Option 4: (5*5+37)/37

This option is incorrect. It involves the calculation (5*5+37)/37, which gives a value of 2.05405405405, which does not represent the number of days it will take for all three to finish the work.

The correct answer is option 1. However, the calculation provided in the option does not properly explain how it is obtained. A more detailed explanation would be