"improving personal relationships" is a poorly phrased specific purpose for a speech because it is

I believe the answer is: written as a fragment rather than a full infinitive phrase.

The purpose of a speech should generally targeted to all audiences of the speech.  'Improving personal relationships' is something that could only be done to a handful of people and could only be done by communicating with those people directly, not by speaking to the crowd.

C. equitable; undue influence

Early 18th century british industries were generally small scale and relatively unsophisticated. most textile production, for example, was centred on small workshops or in the homes of spinners, weavers and dyers: a literal ‘cottage industry’ that involved thousands of individual manufacturers. such small-scale production was also a feature of most other industries, with different regions specialising in different products: metal production in the midlands, for example, and coal mining in the north-east.two illustrations of 18t