The determination of subsurface materials through the use of borings and test pits can be time consuming and expensive. Which type of method is useful for determine subsurface materials?

During the process of drilling boreholes, the following tasks should be considered: Field logging, In situ testing, Sample collection   Field logging, Moisture content test, Sample collection   Sample collection, SPT test, Unconfined compression test   Field logging, In situ testing, Sample collection, Moisture content test

Define the term Rock Core Drilling.

Not site specific I am checking calculations