A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
$-6.2$, $-3.5$, $-0.8$, ?, $4.6$

Let's find the common difference between consecutive terms in the series:
* Second term $-$ First term = $-3.5-(-6.2)=-3.5+6.2=2.7$
* Third term $-$ Second term = $-0.8-(-3.5)=-0.8+3.5=2.7$

Since the common difference is a constant $+2.7$, the missing term can be calculated by adding $2.7$ to the third term:

$$\text{Missing Term}=-0.8+2.7=1.9$$

We can verify this with the final term: $1.9+2.7=4.6$, which matches the series.