Which of the following is true about hammock activities?
a. they are activities in which the costs are not subject to change
b. they are used to identify the use of fixed resources or costs over a segment of a project
c. they are highly sensitive
d. they are an alternative description for the critical path
e. they are a combination of start to start and start to finish lags

b. They are used to identify the use of fixed resources or costs over a segment of a project.

Explanation:

Hammock activity is a project planning or a schedule term for grouping of tasks that are having a deadline.It also contains the resources that we will be needing for the project and also the cost for the project.Hence the answer is option B.

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