Answer:
A. It can be better to live in the present, because reflecting on the past and planning for the future can bring worry and disappointment.
Explanation:
One of the themes that is expressed in the poem "To a Mouse" by Robert Burns is that people often suffer unnecessarily from remembering the past an planning for the future.
In this poem, the author apologizes to a mouse for startling him, and reflects on the difficult life that mice have. However, he argues that this life is still better than human life, because at least the mouse only lives in the present (Still you are blessed, compared with me! / The present only touches you” (Lines
43-44)). On the other hand, humans often plan for the future, only to see their dreams unfulfilled, which brings them grief (The best laid schemes of mice and men / Go often askew, / And leave us
nothing but grief and pain).