Answers
spaces at the start of a line that show which block it belongs to.
symbols such as ==, !=, >, <, >= and <= that check the relationship between two values.
runs a block of code only when its test is true.
runs its block when none of the earlier tests were true and needs no test itself.
checks a further test when the earlier ones were not met, and only one block runs.
the expression checked to decide whether a block of code runs.
the program decides which blocks of code to run based on tests.