Answer: Living room
Explanation;
So when you walk in you see my couch , and table. When you sit on the couch you can see our christmas tree :). Also on the couch you see our TV.
The second option seems the most plausible.
Answer:
You can increase the validity of an experiment by controlling more variables, improving measurement technique, increasing randomization to reduce sample bias, blinding the experiment, and adding control or placebo groups.
Since excrescence and outgrowth are synonymous, they mean the same, we are looking for a pair of synonyms here. So, the correct answer is A, 'facsimile : copy'.