In the molecule shown below, determine which of the highlighted C-H bonds (from a to e) is expected to have the lowest bond dissociation energy. 
Definitions:
Continuous Subcutaneous Infusion
A method of delivering medication at a constant rate under the skin, typically using a pump.
Insulin Pump
A medical device used to administer continuous and regulated doses of insulin to manage diabetes, mimicking the body’s normal release of insulin.
NPH Insulin
An intermediate-acting insulin used to control blood sugar levels in people with diabetes, characterized by its cloudy appearance and typically injected under the skin.
Regular Insulin
A form of insulin with a short duration of action, used in the treatment of diabetes to help control blood sugar levels.
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