How can I tell if a guy likes me​

Notice their expression/character/interaction

Explanation:

Once you see somebody that seems to be attracted to you you'll know pretty quickly. The guy may be nervous/blushing/etc when you talk to him.

if you are talking about current time the answer is no

if you are talking about when the colonies were developing the answer is yes

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: