The highest peace time gallantry award is:

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

$\mathrm{a\_bc\_ab\_ca\_bcc}$

In the following question, a group of letters is given which are numbered $1, 2, 3, 4, 5$and $6.$ Below are given four alternatives containing combinations of these numbers. Select that combination of numbers so that letters arranged accordingly, form a meaningful word.

$$\begin{gathered} C E L S M U \\ 1 2 3 4 5 6 \end{gathered}$$