The correct answers are:
Low switching costs in the market
and
Scale economies available to existing competitors
Rationale: Low switching costs means that it will be easy for customers to change from existing suppliers to a new supplier: this would facilitate entry to the market, as would low start-up costs, therefore it is not a barrier to entry.
The other options should clearly pose difficulties to a new entrant: not yet big enough to benefit from economies of scale (against competitors who are); high degree of recognition of and loyalty to existing brands.
