Answer:
The definitions are explained below.
Step-by-step explanation:
Circumspect is defined by Merriam-Webster Dictionary "careful to consider all circumstances and possible consequences." Cautious or careful are synonyms.
Root (same source) is "the usually underground part of a seed plant body that originates usually from the hypocotyl, functions as an organ of absorption, aeration, and food storage or as a means of anchorage and support, and differs from a stem especially in lacking nodes, buds, and leaves." It is also "proximal end of a nerve" or "the cause of something." According to the context, tuber, source, or foundation can be synonyms.