latest start time - earliest start time

latest finish time - earliest finish time (EFT)

TL-EFT

all of the above

maximum float

minimum float

zero float,

average float

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.