Final answer:
Lady Macbeth is stronger than Macbeth in her lack of doubts about committing murder, as revealed in her determination to see Macbeth become king and her planning of Duncan's murder without hesitation.
Step-by-step explanation:
The question explores the qualities of Lady Macbeth in Act I of Shakespeare's The Tragedy of Macbeth. Specifically, it asks in which way Lady Macbeth is demonstrated to be stronger than her husband, Macbeth. Based on the text from Act I, the answer to Part A is option D: She has no doubts or misgivings about committing murder. This is evident from Lady Macbeth's ruthless determination and proactive approach towards ensuring Macbeth claims the kingship, as highlighted in her soliloquies and interactions with Macbeth, particularly where she chastises his hesitations and plans the murder of Duncan.