Final answer:
The statement can be considered true when referring to well-defined frameworks like in a game of chess. However, 'deep structures' could also imply more abstract foundations, which are not as clearly defined as pieces in a board game, making the statement context-dependent. Option a is correct..
Step-by-step explanation:
The question "Deep structures are like the defined pieces of a board game." seems to stem from a conceptual discussion, potentially linked to linguistics or metaphorical analyses which would align with English studies. The 'deep structures' phrase could reference the underlying rules or frameworks within a system. In chess, the pieces and their movements are well defined, much like pieces of a board game, which possess specific roles and capabilities. In this sense, the phrase could be considered true.
However, 'deep structures' in different contexts could mean fundamental but invisible frameworks, such as the basic rules of a language's grammar, or in biology, where it relates to the foundational aspects beneath the surface level, these need not be precise and defined like board game pieces. Thus, the assertion might also be false if one considers 'deep structures' to be more abstract and not as concretely delineated as board games structures.
Considering all angles, one might contest the truth of this statement without a more exact context, but in relation to chess and other games with fixed rules, it holds up.