Answer
(A) TRUE,
(B) TRUE,
(C) TRUE,
(D) False,
(E) TRUE,
(F) False,
Work Step by Step
(A) TRUE, clear from the figure.
(B) TRUE, same magnitude and direction.
(C) TRUE, by placing $u$ at the end of $a$, we will get $c$.
(D) False, $v-w=-s$ would be true.
(E) TRUE, since they have same magnitude and they are in opposite direction so resultant is zero vector.
(F) False, since $u-v=-(b+t)$
