Which indicator is suitable for the titration of $NaOH$ and oxalic acid?

Phenolphthalein is the most suitable indicator for the titration of:

The $pH$ range of methyl red indicator is .......?

The pink colour of phenolphthalein in an alkaline medium is:

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: Phenolphthalein is a $pH$ dependent indicator,remains colourless in acidic solution and gives pink colour in basic medium.
Reason $R$: Phenolphthalein is a weak acid. It doesn't dissociate in basic medium.
In the light of the above statements,choose the most appropriate answer from the options given below.

In base $vs.$ acid titration,at the end point,methyl orange is present as: