In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

In everyday language, the phrase ‘sleepwalking’ can be used (1)____________ informally and symbolically to describe a lack of energy or attention. However, for (2)_________ infants and adults, sleepwalking is a genuine disorder with serious (3)___________. Sleepwalking, also known as somnambulism, is a sleep-related behaviour condition that causes people to walk or execute other (d:___________ acts while they are still partly sleeping. It is more (5)____________ in children than in adults, and it is more likely to develop if a person has a family history of the illness, is sleep deprived or has many nightly awakenings.

Select the most appropriate option to fill in blank number 2: