Answer
$a)$ 3
$b)$ 1.5
$c)$ 1.5
$d)$ 1.5
$e)$ It is not continuous
Work Step by Step
$a),b),c),d)$ Answers given by direct observation of the graph
$e)$ It is not continuous because the limit $\lim\limits_{t \to 1}g(t)$ does not exist because the lateral limits are not equal.