Laura must always have an early morning cup of coffee. She usually has several more cups throughout the day. If she misses her daily cups of coffee, she gets a headache. The fact that Laura experiences headaches when she discontinues the use of caffeine is an example of:

Withdrawal symptoms.

This is because she take coffee daily but if she misses her daily cups of coffee, she gets a headache.

Withdrawal symptoms

Explanation:

Withdrawal symptoms refers to unplesant psychological, mental or physical feeling when an individual stops or discontinue the use of something that had become habitual or which the individual had been addicted to.

Withdrawal symptoms is surge of adrenaline that results into unpleasant feelings and symptoms as the brain is trying to adjust to the change in the addiction.

From the question, Laura gets a headache whenever misses her daily cups of coffee because she had been addicted to early morning cup of coffee and more cups throughout the day

obviously, the latter.