Final answer:
Chris and Emma are eligible to receive the quarterly dividend from Hammerhead Corporation.
Step-by-step explanation:
The students who are eligible to receive the quarterly dividend from Hammerhead Corporation are Chris and Emma. This is because the record date for the dividend is Friday, March 11th, which means only the shareholders who owned the stock on or before that date will receive the dividend.
Chris purchased 50 shares on January 1st, which is before the record date. Emma purchased 65 shares on March 10th, which is also before the record date. However, Adam purchased 100 shares on March 8th, which is after the record date, so he will not be eligible to receive the quarterly dividend.