duration

total float

free float

interfering float

the minimum time required for completion of project

the maximum time required for completion of project

maximum cost required for completion of project

minimum cost required for completion of project

the float may be positive, zero or negative

if the float is positive and the activity is delayed by a period equal to its total float, the completion of project in not delayed

if the float of an activity is negative, delay in its performance is bound to delay the completion of project

all of the above.

positive value

negative value

zero value

same value

to concentrate his attention on critical activities

to divert the resources from non-critical advanced activities to critical activities

to be cautious for avoiding any delay in the critical activities to avoid delay of the whole project

all of the above