Which sentence has correct punctuation?

a. i have always wanted to become a veterinarian but i don’t do very well in science and math classes.

b. i have always wanted to become a veterinarian but, i don’t do very well in science and math classes.

c. i have always wanted to become a veterinarian, but, i don’t do very well in science and math classes.

d. i have always wanted to become a veterinarian, but i don’t do very well in science and math classes.

What crucial event can change a protagonist's life

Which is not covered under the common topic “relationship” a. causes and effects b. comparisons and contrasts c. contraries and contradictions d. antecedents and consequences

What ideal of imagist poetry is best reflected in this poem by ezra pound in which he compares a crowded metro station to a flowering tree branch? in a station of the metro the apparition of these faces in the crowd; petals on a wet, black bough. a. poetry should be about urban subjects and ideas. b. old poetry should be rewritten in a modern style. c. poets should be able to describe ordinary subjects in new ways. d. poets should write about new subjects with conventional techniques.