Cutting down wood into tiny pieces is an example of:
Physical change
Chemical change

physical.

Explanation:

physical change, it is not changing the formula.

Physical change

Explanation:

A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another. The size or shape of matter may be changed, but no chemical reaction occurs. Physical changes are usually reversible. ... Most chemical changes are irreversible

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.