In all careers, there are both hard skills and (blank) skills that are important for success.

In all careers, there are both hard skills and soft skills that are important for success.

Explanation:

Hard skills refer to skills that are measurable and can be taught. For example writing, technical skills, math and etc whereas soft skills are those which are not measurable and exist within an individual. For example communication skills, etiquette, work ethics and etc.

An employee must have a combination of soft skills and hard skills in order to excel in their career.

the correct answer would be b, when, queen, calder hall and london.

explanation:

we always capitalize words when a paragraph or sentence is starting, when an important name is used, when a place is being written, or simply when a noun is used, etc. so in this sentence, sentence is starting from 'when', so it will be written in capital letters. secondly, queen is considered to be an important person, so it will also be written in capital letter. next, the name of the town is mentioned, i-e calder hall, which will also be written in capital letters. in the last,   city name is being used, 'london', which will also be written in capital letters. so option b is the most appropriate one.