This titration involved adding measured amounts of an acid (HCl) to a base, and recording quantitative measurements of the resulting pH. The necessary equipment includes ...
an acid (specifically, HCl)
a base
a pH meter for quantitative measurements of pH
a device for precisely measuring the acid (a burette works for this)
We believe these requirements are consistent with choices A, B, D, E from the list given.
__
An "indicator" will typically change some obvious property (often, color) at a specific value of pH. It generally is not quantitative enough for the purpose of drawing the supplied graph. A pH meter is a better choice.
The coefficients of the substances give you the ratio of the number of moles. The 4 before the H2O and the 5 before the HCl tell you that for every 5 moles of HCl created, 4 moles of H2O had to react.
Therefore: can be used to find the moles of H2O that react.