Taste is a(n) sense that can only truly be distinguished by the one who is doing the tasting.

objective
hypothesized
subjective

subjective

Explanation:

Taste is a subjective sense because it depends almost completely on the person doing the tasting. Because taste cannot be numerically measured, what each taster perceives in a flavor is what gives tastes its uniqueness and score.

If taste were objective, everyone would detect exactly the same taste in even the most complex of flavors. Thousands of people would be able to try the same soup and they would assign it the exact same taste score. This is not the case since individual taste buds and experience also dictate how something will taste.

some sort of sound device i believe.

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.