Use This Information to Answer the Following Questions

question 30

Multiple Choice

Use this information to answer the following questions.
Consider the following Activity-On-Node (AON) project (activity completion times are in days) .

-Refer to the figure.What are the immediate predecessor(s) of activity D?

• A)B and C
• B)B
• C)C
• D)C and E
• E)B and E

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Definitions:

Helper T cells

A type of white blood cell that plays a central role in the immune response by activating other immune cells to fight infection.

Infects

The process by which a pathogen enters, invades, and multiplies in a host organism, causing disease or infection.

Immunotherapy

A type of cancer treatment that helps your immune system fight cancer.

Cytotoxic T cells

A type of lymphocyte that kills cancer cells, cells that are infected (particularly with viruses), or cells that are damaged in other ways.