What process does a new substance form

The ph of carrots are 5.0 how it is classified a.acidic b.basic c.indicator d.neutral

Iknow #2 is d. i just need to know why

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. the values of phosphorous acid are 1.30 6.70 calculate the ph for each of the given points in the titration of 50.0 ml of 1.5 m h3po3(aq) with 1.5 m koh(aq) .