Yesterday they visited an art museum.

is that base, past, past particle, or present particle?

Past

Explanation:

In the given sentence Past tense is used.

Here the  subject visited an art museum yesterday. Hence it was an completed action and it falls under past tense category.

Here the subject completed the action in a definite time in the past.

Here the verb is in the past form of "visit". Hence from the above statements it is clear that Sentence type belongs to PAST.

1. both men a determined to break douglass.

2. douglass is still considered to be one of captain anthony's possessions.

3. douglass escapes to freedom in the north and changes his name.

4. the events are usually written from a distance in time.

5. the recording of events in chronological order.

the answer is subjective. i personally agree with the first answer for this question.

if one isn't strictly talking about objects then the correct answer would be 'my eyes' since according to this riddle i am asleep and in order to answer/open the door i need to open my eyes first of all.

however, if one is specifically looking for an object, then the first thing i would open would be the door

hope this !